US20150236780A1 - Provision of broadband access to airborne platforms and ground terminals using fixed satellite service and direct broadcast satellite spectra - Google Patents

Provision of broadband access to airborne platforms and ground terminals using fixed satellite service and direct broadcast satellite spectra Download PDF

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US20150236780A1
US20150236780A1 US14/284,079 US201414284079A US2015236780A1 US 20150236780 A1 US20150236780 A1 US 20150236780A1 US 201414284079 A US201414284079 A US 201414284079A US 2015236780 A1 US2015236780 A1 US 2015236780A1
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system
cell site
aerial platform
radio sub
aerial
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Ahmad Jalali
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Bridgewest Finance LLC
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Ahmad Jalali
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    • HELECTRICITY
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B64C2201/12Unmanned aerial vehicles; Equipment therefor adapted for particular use
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    • HELECTRICITY
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    • H04W88/16Gateway arrangements
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    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02D70/10Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT]
    • Y02D70/12Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT] in 3rd Generation Partnership Project [3GPP] networks
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    • Y02D70/1242Techniques for reducing energy consumption in wireless communication networks according to the Radio Access Technology [RAT] in 3rd Generation Partnership Project [3GPP] networks in 3rd generation [3G] networks in Universal Mobile Telecommunications Systems [UMTS] networks
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

Systems and methods are described that use the downlink and uplink frequency bands of the fixed satellite service (FSS) and direct broadcast service (DBS) systems to provide broadband access to aerial platforms including aircraft, drones, and unmanned aerial vehicles (UAVs) such as balloons. The secondary service aerial platform transmitters are configured to avoid interference into the primary satellite service receivers. The aerial platform may be able to detect and connect to the cell site with the strongest signal. The aerial platform may be able to handoff from one cell site to another. Systems and methods are described that provide broadband access to ground terminal via aerial platforms such as drones and UAVs such as balloons.

Description

    CROSS-REFERENCE TO RELATED APPLICATIONS
  • This application claims priority to U.S. Provisional Patent Application Ser. No. 61/940,805, filed on Feb. 17, 2014, U.S. Provisional Patent Application Ser. No. 61/946,575, filed on Feb. 28, 2014.
  • BACKGROUND OF THE INVENTION
  • Many aerial platforms such as airplanes, balloons, blimps, and drones or Unmanned Aerial vehicles (UAVs) may desire broadband access.
  • The Federal Communications Commission (FCC) has recently issued a Notice of Proposed Rule Making (NPRM) to allow the use of the Ku or 14-14.5 GHz band for the use of an air to ground (ATG) system. The use of the 14-14.5 GHz band for ATG deployment is contingent upon protecting the incumbent satellite services in this band. The ATG cell sites must be designed in such a way as to achieve the low emission limits toward Geo-Stationary satellites that will be imposed by the FCC. The 14 to 14.5 GHz band is primarily used for the uplink of geo-stationary satellite systems.
  • Another spectrum band that is a candidate for use for ATG applications on a non-interfering basis is the spectrum used for the satellite downlink, such as the 12-12.7 GHz band for the satellite direct broadcast service (DBS), and the 11.7-12.2 GHz used for downlink of fixed satellite service (FSS).
  • The 11.7-12.2 GHz and 11.2-12.7 GHz bands are available in the Americas, so called region 2. The DBS and FSS bands are also available in other regions in different parts of the Ku (12-18 GHz) band. There is also FSS spectrum available in the C and Ka bands to which the techniques of this disclosure also apply. The Ka band downlink and uplink FSS spectrum are in the 18-20 GHz and 26.5-40 GHz ranges, respectively. The exact location of the downlink and uplink in the specified range depends on the specific region of the world. The C band downlink and uplink are in the 3.7-4.2 GHz and 5.925-6.425 GHz range.
  • Thus there is a need for a system that utilizes the downlink and uplink of the FSS and DBS bands to provide Internet connectivity to aerial platform terminals as well as ground terminals, without interfering with the incumbent satellite receivers/services.
  • BRIEF SUMMARY OF THE INVENTION
  • The present disclosure describes aspects of a system for providing broadband Internet access to aerial platforms such as airplanes, balloons, blimps, and drones or unmanned aerial vehicles (UAVs) using fixed satellite service (FSS) and direct broadcast satellite (DBS) spectra as a secondary service.
  • Some embodiments provide systems and methods for providing broadband access to aerial platforms. A system may include: an aerial platform consisting of a radio transmitter sub-system, a radio receiver sub-system, a processor sub-system, a memory sub-system, and an antenna sub-system. A coverage area of the system may be divided into cell sites with cell site radio equipment consisting of a processor sub-system, a memory sub-system, an antenna sub-system, and a terrestrial Internet connectivity sub-system placed at the upper and lower corner of each cell site. The system may also include a wireless radio transmitter sub-system at the first corner of the cell site (the upper or lower), and a wireless radio receiver at the second, remaining, corner of the cell site.
  • Some embodiments provide systems and methods to ensure all wireless radio transmissions between an aerial platform and cell site equipment are in one direction, north to south, or vice versa depending on whether the system is deployed in the northern hemisphere or southern hemisphere, by having the aerial platform receive data from the radio antenna sub-system located at the first corner of the cell site only, and transmit data only to the radio sub-system of the second corner of the cell site.
  • Some embodiments provide systems and methods for connecting the cell site equipment at the first and second corners of each site as well as adjacent cell sites via a terrestrial network or a second wireless network operating on possibly a second frequency other than the one used for communications with the aerial platforms; for the cell site radio sub-system located at the first corner of the cell site to send signaling messages to the aerial platform; and for the radio sub-system located at the second corner of the cell site to receive signaling messages from the aerial platform and forwarding the signaling messages to the cell site equipment at the first corner of the same cell site.
  • Some embodiments provide systems and methods for an aerial platform transmit antenna to reduce its transmit antenna gain at shorter distances to the receiving cell site in order to keep an almost constant sum of path loss plus transmit antenna gain regardless of distance between the aerial platform and receiving cell site antenna. The cell site transmit antenna also includes systems and methods to reduce its transmit antenna gain at shorter distances to the aerial platform in order to keep an almost constant sum of path loss plus transmit antenna gain regardless of distance between the aerial platform and the transmitting cell site antenna.
  • Some embodiments provide systems and methods that allow an aerial platform radio sub-system to measure beacon signals received from the nearby cell site transmitters located at the first corner of the cell sites; the aerial platform to send an association/connection request message to the receiver radio sub-system located at the second corner of the cell site from which it receives the beacon with strongest signal quality; the receiving cell site radio sub-system at the second corner of the cell site to send an acknowledgement message in response to the association message to the cell site radio sub-system at the first corner of the cell site; and the cell site radio transmitter at the first corner of the cell site to forward the association acknowledgement message to the aerial platform to complete the association/connection.
  • Some embodiments provide systems and methods that allow the aerial platform radio sub-system receiver to measure downlink signal quality from signals sent from the cell site radio sub-system transmitter located at the first corner of the cell site, and to determine the highest achievable downlink data rate, referred to as downlink data rate indicator (DDRI) based on measured signal quality; the cell site radio sub-system receiver located at the second corner of the cell site to measure signal quality of the signal sent by the aerial platform on the uplink, and to determine the highest achievable uplink data rate, referred to as uplink data rate indicator (UDRI) based on measured signal quality; the cell site equipment at the second corner of the cell site to send the UDRI to the cell equipment at the first corner of the cell site, and the radio sub-system transmitter of the first corner sending the UDRI to the aerial platform; the aerial platform radio sub-system to send the DDRI to the receive radio sub-system at the second corner of the cell site, the cell site equipment at the second corner sending the DDRI to the cell site equipment of the first corner; and the cell site equipment at the first corner to use the DDRI to determine the data rate at which to transmit to the aerial platform.
  • Some embodiments provide systems and methods to detect the need for handoff from one cell site to another and to carry out handoff whereby: the aerial platform radio sub-system measures beacon signal strength of the cell site radio transmitter located at the first corner of the nearby cell sites; the aerial platform radio or processor sub-systems determine, based on measured beacon signal qualities, if the signal strength of beacon signal of a second cell site is within a certain threshold of beacon signal of the first cell site currently serving the aerial platform, i.e. if handoff to a second cell site is needed; the aerial platform radio sub-system sends a handoff request message to the cell site radio receiver located at the second corner of the first cell site requesting handoff to a second cell site; and the cell site equipment located at the second corner of the first, serving, cell site forwards the handoff request message to the cell site equipment located at the first corner of the first cell site as well as to the second cell site to which the aerial platform has requested handoff to complete the handoff process.
  • In some embodiments, the radio sub-system at the first corner of the cell site includes a radio receiver, and the radio sub-system at the second corner of the cell site includes a radio transmitter. In an embodiment of the system where the cell site equipment at both corners of the cell site include both radio transmitter and receivers: the aerial platform transmits on the FSS uplink frequency and receives on the FSS downlink frequency to/from the cell site equipment at the first corner of the cell site; the aerial platform transmits on the FSS downlink frequency and receives on the FSS uplink frequency to/from the cell site equipment at the second corner of the cell site; and the cell site equipment at one corner of the cell site is identified as the anchor to the Internet, and the data from the cell site equipment at the other corner is sent to the anchor corner to reach the Internet.
  • In another embodiment, only the southern corner of the cell site has radio and antenna sub-system equipment, and the aerial platform radio sub-system transmits on the FSS downlink frequency to the cell site radio sub-system at the southern corner, and the cell site radio sub-system at the southern corner transmits to the aerial platform using the FSS uplink frequency.
  • Some embodiments provide systems and methods to provide Internet access to ground terminals using aerial platforms. Ground terminals consist of: a processor sub-system; a memory sub-system; a radio transmitter to encode data and modulate signals and transmit to aerial platforms using one or more of the FSS downlink frequency bands; a radio receiver unit to demodulate and decode signals received from aerial platforms on one of the FSS downlink frequency bands; and at least one antenna fixture tuned to one or more FSS downlink pointed toward at least one aerial platform.
  • In some embodiments, the ground terminal processor and radio sub-system control one antenna to point to an aerial platform to its north direction and control the second antenna to point to a second aerial platform to the south of the ground terminal. Furthermore, the ground terminals transmit on an FSS downlink frequency band to the aerial platform to its north or south depending on whether the ground terminal is located in the northern hemisphere or southern hemisphere, and the receive from the second aerial platform on an FSS downlink frequency band.
  • In some embodiments, the ground terminals transmit on one or more FSS uplink frequency band to one of the two aerial platforms to the north of the terminal for terminals deployed in the northern hemisphere, or to the aerial platform to the south of the terminal for terminals deployed in the southern hemisphere; and the ground terminals receive on one or more FSS uplink frequency bands from one or both of the aerial platform to its north or south. In another aspect of the disclosure, the ground terminals only communicate with one of the two aerial platforms to its north or south.
  • In some embodiments, the ground terminal radio sub-system further reduces the transmit power spectral density by spreading and encoding the data to be transmitted over a wider bandwidth than the data rate. Furthermore, the ground terminal radio sub-system uses a terminal specific code to encode the terminal data to be transmitted so that the aerial platform radio sub-system may separate and decode the signals received from different ground terminals on the same frequency.
  • The preceding Brief Summary is intended to serve as a brief introduction to various features of some exemplary embodiments of the invention. Other embodiments may be implemented in other specific forms without departing from the spirit of the invention.
  • BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
  • The novel features of the invention are set forth in the appended claims. However, for purpose of explanation, several embodiments of the invention are set forth in the following drawings.
  • FIG. 1 illustrates a schematic block diagram of a direct broadcast satellite service system of some embodiments;
  • FIG. 2 illustrates a schematic block diagram showing a system of some embodiments for providing broadband access to an aerial platform using the downlink spectrum of FSS or DBS frequency bands;
  • FIG. 3 illustrates a conceptual representation of an antenna structure used by some embodiments;
  • FIG. 4 illustrates a schematic block diagram of the ground terminal radio equipment of some embodiments;
  • FIG. 5 illustrates a schematic block diagram showing the angle between an aerial platform transmission and a cell site;
  • FIG. 6 illustrates a schematic block diagram showing the angle between a ground terminal and cell site;
  • FIG. 7A illustrates a flow chart of a conceptual process used by an aerial platform to detect a cell site beacon and to establish a connection with the cell site;
  • FIG. 7B illustrates a flow chart of a conceptual process a cell site may perform to establish a connection with an aerial platform;
  • FIG. 8A illustrates a flow chart of a conceptual process used by some embodiments to determine the data rates the aerial platform and cell site radio sub-systems use to transmit data;
  • FIG. 8B illustrates a flow chart of a conceptual process used by some embodiments to determine the data rates the aerial platform and cell site radio sub-systems use to transmit data;
  • FIG. 9 illustrates a schematic block diagram showing handoff of an aerial platform from one cell site to another;
  • FIG. 10A illustrates a flow chart of a conceptual process used by some embodiments to carry out handoff of the aerial platform from a first serving cell site to a second handoff candidate cell site;
  • FIG. 10B illustrates a flow chart of a conceptual process used by some embodiments to carry out handoff of the aerial platform from a first serving cell site to a second handoff candidate cell site;
  • FIG. 11 illustrates a schematic block diagram of a system adapted to provide broadband access to aerial platform using both the downlink and uplink of FSS frequency bands;
  • FIG. 12 illustrates a schematic block diagram of a system adapted to provide broadband access to ground terminals via aerial platforms;
  • FIG. 13 illustrates a schematic block diagram of a system that provides broadband access to a ground terminal via multiple aerial platforms using both the downlink and uplink frequencies of the FSS bands;
  • FIG. 14 illustrates a schematic block diagram of a system that provides broadband access to a ground terminal via a single aerial platforms using both the downlink and uplink frequencies of the FSS bands; and
  • FIG. 15 conceptually illustrates a schematic block diagram of a computer system with which some embodiments of the invention may be implemented.
  • DETAILED DESCRIPTION OF THE INVENTION
  • The following detailed description is of the best currently contemplated modes of carrying out exemplary embodiments of the invention. The description is not to be taken in a limiting sense, but is made merely for the purpose of illustrating the general principles of the invention, as the scope of the invention is best defined by the appended claims.
  • Various inventive features are described below that can each be used independently of one another or in combination with other features. Broadly, some embodiments of the present invention generally provide ways to share the spectrum of downlink and uplink of FSS and DBS bands in the C, Ku and Ka bands to provide Internet connectivity to aerial platforms as well as to ground terminals, without interfering with incumbent satellite services. Some embodiments may use the downlink of the satellite FSS and DBS bands to provide Internet connectivity to aerial platforms on a non-interfering basis. The uplink spectrum of the FSS bands in conjunction with the downlink spectrum may be used by some embodiments to provide Internet connectivity to aerial platforms. Some embodiments may provide Internet connectivity to ground terminals using the FSS and DBS bands while using aerial platforms as a relay.
  • FIG. 1 shows a ground terminal satellite receiver 120 and a geo-stationary satellite 140. Consider a satellite terminal 120 that is located in northern hemisphere, such as over the continental United States (CONUS). The terminal antenna 124 is pointing southward toward satellite 140. Satellite 140 is transmitting information to terminals in the general northern direction. The terminal antenna 124 receiving signals from the satellite has a high gain antenna pointing toward the satellite and a low gain “backlobe” antenna pointing toward north. Therefore, any secondary service that uses the spectrum used for geo-stationary satellite FSS or DBS downlinks (such as the 12.2-12.7 or 11.7-12.2 GHz of the Ku bands in the US or similar bands in other regions of the world) must avoid transmitting toward the main antenna lobe of the satellite terminal antenna 124. There are also other satellite FSS bands (e.g., the Ka and C bands) to which embodiments of this invention may apply.
  • To avoid interference, the transmissions of the secondary service should occur toward the southern direction in order to avoid transmitting into the main lobe of the satellite terminal antenna. Moreover, the signal of the secondary service received at the backlobe of the primary service satellite receiver 120 must be low enough such as not to increase the thermal noise of the satellite receiver by more than a certain threshold (e.g., the rise over thermal (ROT) caused by the secondary service must be held below a threshold). The ROT limit allowed for secondary services is typically 1% or less. For terminals placed in the southern hemisphere, the satellite antennas would point toward north and any secondary service deployed in the southern hemisphere would need to avoid transmitting toward south.
  • In general, the secondary service needs to limit transmission to the back of the satellite terminal antennas in order to avoid interfering with the satellite service. The systems and methods described herein may utilize an exemplary system deployed in the northern hemisphere. The systems and methods are the same for a system deployed in the southern hemisphere, but by directions of transmissions would be reversed.
  • Some embodiments may provide Internet connectivity to aerial platforms such as aircraft or drones using a network of ground cell sites. FIG. 2 shows a hexagonal cell site coverage area 160, a cell site 110 s (with associated cell site radio sub-system 112) deployed at the southern corner of the area 160, and cell site 110 n (with associated cell site radio sub-system 112, not shown) deployed at the northern corner of area 160. In some embodiments, the two sites 110 s-110 n may together form a single cell site 110 with associated hexagonal coverage area 160. As will be described in detail below, the cell sites 110 s and 110 n may communicate with aerial platforms 130, via radio sub-systems 112, in such a way as not to interfere with satellite terminals 120.
  • The cell site radio sub-system 112 may include a memory sub-system 412, a processor sub-system 414, a transmitter sub-system 416 to modulate data and transmit the signal toward aerial platform, a receiver sub-system 418, and a terrestrial connectivity sub-system 417 to send and receive data from the Internet. In some embodiments, the radio sub-system 112 of the site 110 n deployed at the northern corner of area 160 may include a transmitter sub-system 416 but not a receiver sub-system 418 and the site 110 s deployed at the southern corner may include a receiver 418 but not a transmitter 416.
  • The airborne platform may be an aircraft, a drone/UAV (Unmanned Aerial Vehicle), helicopter, balloon, blimp, robocopter, high altitude platforms, and/or any other device that may be able to fly and/or hover from low to high altitude (e.g., up to seventy thousand feet or more). As shown in FIG. 2, the aerial platform 130 has an aerial platform antenna sub-system 134 and an aerial platform radio sub-system 132 connected to the antenna sub-system 134.
  • As shown, the aerial platform radio sub-system 132 may include a transmitter 316 for modulating the data and sending a signal through the antenna fixture 134, a receiver 318 for demodulating and decoding the cell site signal received on antenna fixture 134, a processor 314 for functions such as controlling the transmitter and receiver, doing handoffs, and determining what data to send to the cell sites among other functions, memory sub-system 312 for storing program code, configuration data and system parameters, and switch sub-system 319 for switching data received from different ground terminals to cell sites and vice versa.
  • The aerial platform antenna 134 must have coverage in 360° in order to have visibility to at least two cell sites, one to the north and one to the south. As shown in FIG. 2, one way to ensure that the aerial platform antenna sub-system 134 views at least two cell sites is to install two antenna fixtures 134 r and 134 f in order to avoid any blockage due to engine pod, wings, and/or other features. Each of the aerial platform antennas 134 f and 134 r must cover at least 180° in azimuth in order to ensure that regardless of the orientation of the aerial platform at least one antenna has visibility to cell site antennas 114 n and 114 s.
  • Each of the aerial platform antennas 134 f and 134 r may include a number of antenna apertures. As shown in FIG. 2, the cell site radio sub-systems and aerial platform radio sub-system may communicate over an FSS downlink frequency denoted by Fd. If both downlink and uplink FSS frequency bands are used, transmissions are shown using Fd and Fu labels.
  • FIG. 3 shows one example aerial platform antenna 134 structure that has seven apertures 135 and covers 360° in azimuth as well as low and high elevation angles. Each antenna aperture may include a number of antenna elements. Antenna elements may be combined appropriately, such as using phased array technology, to steer the antenna beam in azimuth and elevation toward the desired location. If an antenna with multiple antenna apertures such as the one in FIG. 3 is used in the aerial platform, then one of the apertures may be used to receive from cell site antenna 114 n and a second aperture may be used to transmit toward cell site antenna 114 s.
  • FIG. 4 shows a schematic block diagram of a ground terminal 180. Ground terminal radio sub-system 182 may include a processor sub-system 814, a memory sub-system 812, a transmitter sub-system 816, and a receiver sub-system 818. The system of FIG. 4 also includes two different antennas 184 a and 184 b for the ground terminals. As described in further detail below, in some embodiments one antenna is used to receive from an aerial platform from north of the ground terminals and the other antenna is used to transmit to an aerial platform to the south of the ground terminal or vice versa.
  • In the description that follows, secondary service may refer to the service provided from/to the aerial platforms. In order to avoid transmitting toward the main lobe of the ground terminal satellite antennas, all transmissions must only be toward south. FIG. 2 illustrates the flow of traffic between the aerial platform 130 and cell site radio sub-systems 112 n and 112 s. Data destined from the Internet 150 to aerial platform 130 may be sent to the aerial platform using cell site radio sub-system 112 n. Antenna aperture 114 n of cell site 112 n may be used to transmit messages/data packets 212 to aerial platform 130 to the south of the cell site 112 n. Then, the signal transmitted by 112 n may be seen by the backlobe of satellite terminal antenna 124, thereby avoiding interference into the satellite terminal 120.
  • Messages/data packets 232 from aerial platform 130 may be sent to cell site 110 s. Cell site antenna aperture 114 s of cell site 110 s may be used only to receive from aerial platform 130 as shown in FIG. 2. In other words, aerial platform 130 may receive data from cell site 110 n and transmit data to cell site 110 s. In this fashion, all transmissions to and from aerial platform 130 are toward the southward direction thereby avoiding transmission into the main lobe of satellite antennas 124 which are also directed toward the south direction.
  • The interference caused at the satellite terminal receiver by the secondary service aerial platform 130 transmitter is given by equation (1) below:
  • Interference ( dBW ) = Aerial_Platform _PA _Power ( dBW ) + Aerial_Platform _Antenna _Gain _Toward _Satellite _Terminal ( dB ) - Path_Loss ( dB ) + Satellite_Receiver _Antenna _Backlobe _Gain ( dB ) . ( 1 )
  • Assume the worst case backlobe gain for the satellite terminal antenna for interference calculation of equation (1) above (i.e., assume the satellite terminal antenna backlobe gain is constant). Then, as can be seen from equation (1), in order to maintain interference from the secondary service transmitter into the satellite terminal receiver below a certain threshold, the sum of path loss from the secondary transmitter to the satellite terminal receiver and the Effective Isotropic Radiated Power (EIRP) from the secondary transmitter toward the satellite terminal receiver must be below a threshold regardless of the relative locations of the secondary service transmitter and the satellite terminal receiver. Note that the sum of the first two terms on the right hand side of (1) (i.e., the PA transmit power and the transmit antenna gain) determine the EIRP in a given direction. The condition that the received signal power from a secondary service at the primary service satellite terminal be almost constant regardless of the distance between the secondary service transmitter and the primary service satellite terminal receiver is referred to as the “isoflux” property in this document.
  • FIG. 5 shows the angle θ from the main beam of the airborne platform antenna 134 f toward a cell site 110 or terminal on the ground relative to the horizon direction. When the aerial platform 130 is very far from the cell site 110, then the main beam of the aerial platform antenna 134 f points just below the horizon toward the cell site 110. Therefore, the highest aerial platform antenna gain is a few degrees below horizon to cover the most distance cell site. For given aerial platform and cell site locations, the closer the satellite terminal is to the airborne platform the larger the angle θ. Therefore, the antenna gain of the airborne transmitter must have low gain at high angles θ, so that the sum of the EIRP from the airborne transmitter and the path loss toward the terminal on the ground remain almost constant. In other words, the gain from the airborne transmit antenna must decrease as the angle θ increases commensurate with the decrease in path loss. Note that if the aerial platform is close to the cell site, then the aerial platform antenna gain toward the cell site will be low. But since the path loss from the aerial platform to a near cell site is also small due to the small distance, the signal received from the aerial platform at the cell site will be high enough to achieve the required the data rates.
  • As shown in FIG. 6, the primary service satellite terminal 120 may typically be located on the side of a house or building 170, pointed south. The cell site antenna 114 may typically be located at the top of a tower high enough so that the angle φ will be as high as possible. For terminals that are farther away from cell site 110 n, the angle φ decreases but the path loss increases. The interference received at the satellite receiver from the secondary service is given by equation (2) below:
  • Interference ( dBW ) = Cell_Site _PA _Power ( dBW ) + Cell_Site _Antenna _Gain _Toward _Satellite _Terminal ( dB ) - Path_Loss ( dB ) - House_Penetration _Loss ( dB ) + Satellite_Receiver _Antenna _Backlobe _Gain ( dB ) . ( 2 )
  • One approach to maintain low interference into the satellite receiver would be to design the cell site antenna 114 so that the gain of the antenna below horizon is low. At closer distances to the cell site 110, the angle φ is high and the cell site antenna roll off would be high helping maintain interference into the satellite receiver below the threshold. At farther distances, the angle φ would be lower and the cell site antenna gain toward the satellite receiver would be higher; but the path loss between the cell site and the satellite receiver would also be higher helping contain interference. Moreover, at farther distances from the cell site it is very likely that there will be obstructions such as trees and buildings which would significantly attenuate the signal from the cell site toward the satellite receiver. In fact, if the secondary service cell site antenna is on top of a tower and the satellite receiver on the south side of a house/building then even at close distances between the cell site and satellite terminal there may be significant house/building penetration loss reducing interference into the satellite receiver.
  • FIG. 2 shows a communication pathway 200 among radio sub-systems 112 n and 112 s. The pathway 200 depicts a terrestrial communication path for carrying necessary signaling messages as well as data packets between 112 n and 112 s which will be further described below. The pathway 200 may be implemented via a dedicated physical wired or fiber link, dedicated virtual links, microwave links, satellite links, and/or other appropriate communication pathways.
  • Messages 212 originating from cell site 110 n, may be signaling messages such as a beacon signal periodically sent by the cell site, or data packets received from the Internet 150. Messages 232 sent by aerial platform 130 to cell site 110 s may similarly be signaling messages such as association/registration, handoff initiation, uplink bandwidth request, or data packets destined from aerial platform 130 to the Internet 150.
  • As was described above, the downlink (direction from ground cell site to aerial platform) and the uplink (direction from aerial platform to the ground cell site) transmissions occur from geometrically distant cell sites 110 n and 110 s. Therefore, a signaling mechanism is needed between cell site equipment 110 n and 110 s in order to carry out radio link management functions such as controlling data rates on the downlink and uplink, acknowledging the downlink and uplink packets, and carrying out handoffs from one cell site area 160 to another.
  • Each cell site radio sub-system 112 n may periodically transmit a beacon signal 212. The aerial platform 130 may search for beacon signals. In searching for the beacon signals, the aerial platform radio sub-system 132 may use the aerial platform position location coordinates and knowledge of cell sites in view of the aerial platform to limit the search to those beacons that are more likely to be in view of the aerial platform antenna 134. Aerial platform radio sub-system 132 may decode the beacon signals 212 received from all cell sites 110 n from which it can receive a strong enough signal, and choose the cell site 110 n from which it receives the strongest beacon signal.
  • Aerial platform radio sub-system 132 may then send an association request in a message 232 to the chosen cell site radio sub-system 112 s. The cell site radio sub-system may, in turn, send the association message to cell site 112 n so that cell site 112 n may send an acknowledgement of the association request in a message 212 to aerial platform 130. At this time, aerial platform 130 may be associated with cell sites 110 n and 110 s, where site 110 n provides the downlink to the aerial platform 130 and site 110 s provides the uplink to the aerial platform 130.
  • The association message may be a request to set up a connection between the aerial platform 130 and the cell sites 110 n and 110 s. The connection may be set up when the aerial platform receives an acknowledgement message for the association message.
  • FIG. 7A illustrates a flow chart of a conceptual process 700 used by an aerial platform to detect a cell site beacon and to establish a connection with the cell site. The process may be performed by an aerial platform radio sub-system of some embodiments.
  • As shown, the process may search (at 710) for all cell site beacons sent from cell site radio sub-systems from north of the aerial platform. Next, the process may choose (at 720) the cell site from which it receives the strongest beacon (or choose a cell site based on some other appropriate criteria). The process may then send (at 730) an association message to the cell site radio sub system that is to the south of the aerial platform and is paired with the northern cell site chosen at 720. The process may then receive (at 740) an acknowledgement message from the northern cell site of the chosen north-south pair. With a communication link established, the process may then end.
  • FIG. 7B illustrates a flow chart of a conceptual process 750 a cell site may perform to establish a connection with an aerial platform. Such a process may be performed by the cell site radio sub-systems of the north-south pair.
  • As shown, the process may transmit (at 760) a beacon signal. Such a signal may be constantly transmitted while the site is operating. The beacon signal may be sent by the north site in a north-south pair. Next, the process may receive (at 770) an association request from an aerial platform. Such an association request may be received by the south site in a north-south pair. Next, the process may send (at 780) an association message from the south site to the north site (e.g., over link 200). The north site may then transmit (at 790) an acknowledgement message to the aerial platform to establish a communication link and then the process may end.
  • Some embodiments provide a way to acknowledge uplink and downlink packets. In any wireless communication system, each end of the link needs to detect the packets that have not been received correctly so that the transmitter may resend the erroneous packets. The uplink receiver at cell site 110 s may determine which packets are missing (i.e., packets that have not been received correctly from the aerial platform) and send a message to the downlink transmitter at cell site 110 n with information regarding any missing packets. Cell site transmitter 112 n may, in turn, send a message on the downlink to aerial platform 130 with the list of packets that the cell site 110 s receiver is still expecting from the aerial platform 130. Aerial platform 130 radio sub-system 132 may then retransmit the missing packets to cell site 110 s. Aerial platform radio sub-system 132 may detect the missing downlink packets and send a message to cell site 110 s with the list of missing packets. Cell site 110 s may, in turn, send a message to cell site 110 n with information regarding any missing packets. Cell site radio sub-system 112 n may then retransmit the missing packets to the aerial platform 130.
  • The aerial platform radio sub-system 132 may need to choose highest data rate at which to send messages/data packets to cell site 110 s such that the cell site radio system 112 s may decode be able to decode the received data correctly with a high probability. The cell site radio sub-system 112 s may measure signal quality metrics such as signal to interference plus noise ratio (SINR) using the messages sent by aerial platform radio sub-system 132. The cell site radio sub-system 112 s may then determine the highest data rate that it can decode using the measured signal quality, referred to as the uplink data rate index (UDRI), and send the UDRI to cell site radio sub-system 112 n. Cell site 110 n in turn may send the UDRI in a message 212 to aerial platform radio sub-system 132. The aerial platform radio sub-system may then use the UDRI to choose the data rate to send information to cell site 110 s.
  • Similarly, the aerial platform radio sub-system 132 may measure a signal quality metric such as SINR using packets 212 it receives from the cell site radio sub-system 112 n. The sub-system 132 may then determine the highest data rate the sub-system may decode given the measured signal quality, referred to as the downlink data rate index (DDRI). Aerial platform radio sub-system 132 may send the determined DDRI to cell site radio sub-system 112 s. Radio sub-system 112 s in turn may send the DDRI to cell site radio sub-system 112 n using a terrestrial communications network 200. Cell site radio sub-system 112 n in turn may use the received DDRI to choose the data rate it uses to send information to aerial platform 130.
  • FIG. 8A illustrates a flow chart of a conceptual process 800 used by some embodiments to determine the data rates the aerial platform and cell site radio sub-systems use to transmit data. Such a process may be executed by an aerial platform of some embodiments.
  • As shown, the process may measure (at 810) downlink performance and determine (at 820) a data rate. The aerial platform may measure received SINR on the downlink and uplink data rates (DDRI and UDRI) using received messages or beacon/pilot signals. Next, the process may send (at 830) the determined DDRI to the southern cell site 110 s. The process may then receive (at 840) determined data rates from the northern cell site 110 n and then may end. The northern cell site and the aerial platform radio sub-system 132 may then transmit data at the DDRI and UDRI data rates.
  • FIG. 8B illustrates a flow chart of a conceptual process 850 used by some embodiments to determine the data rates the aerial platform and cell site radio sub-systems use to transmit data. Such a process may be executed by a cell site pair of some embodiments.
  • As shown, the process may determine (at 860) uplink performance using received messages or beacon/pilot signals. Next, the process may receive (at 870) a data rate (e.g., determined DDRI) from the aerial platform. The process may then send (at 880) the received and determined data rates to the northern cell site 110 n from the southern cell site 110 s using a terrestrial link 200. The process may then send (at 890) the data rates to the aerial platform from the northern cell site 110 n. The northern cell site and the aerial platform radio sub-system 132 may then transmit data at the DDRI and UDRI data rates.
  • FIG. 9 illustrates a schematic block diagram of an aerial platform handoff from a first cell site 110-1 having associated coverage area 160-1 to a second cell site 110-2 having associated coverage area 160-2. The aerial platform radio sub-system may measure beacon signals received from neighboring cell sites 110-1 and 110-2. Once the aerial platform radio sub-system finds a beacon signal that is within a certain threshold of the beacon of the cell site it is communicating with, it may send a handoff request within a message 232-1 to the southern cell site radio sub-system 112 s-1.
  • Cell site 110-1 may send a message to cell site 110-2 informing cell site 110-2 that the aerial platform 130 intends to handoff to cell site 110-2, and will also specify a time after which aerial platform 130 will start communication with cell site 110-2. Cell site radio sub-system 112 s-1 may also send a message to radio sub-system 112 n-1 informing the northern cell site 110 n-1 that the aerial platform 130 will handoff to cell site 110-2 after a certain time instant. Cell site radio sub-system 112 n-1 in turn may send an acknowledgement for the handoff to the aerial radio sub-system 132 using a downlink message 212-1.
  • FIG. 10A illustrates a flow chart of a conceptual process 1000 used by some embodiments to carry out handoff of the aerial platform from a first serving cell site to a second handoff candidate cell site. Serving cell site refers to the cell site with which the aerial platform is currently communicating. Such a process may be executed by an aerial platform of some embodiments.
  • As shown, the process may determine (at 1010) a signal quality for each of the available sites. In some embodiments, the aerial platform radio sub-system may measure beacon signals of neighboring cell sites. The process may then determine (at 1020) whether the beacon signal strength of a candidate cell site is within a threshold of the signal strength of the beacon signal of the serving cell site. If the process determines that the strength of the candidate signal is not within the threshold, the process may repeat operations 1010-1020 until the process determines that the signal strength of the candidate site is within a threshold of the serving site signal strength.
  • Next, the process may send (at 1030) a handoff request message from the aerial platform to the southern cell site radio sub-system of the serving cell site. The process may then receive (at 1040) a handoff completion message from the northern cell site including the time handoff will take effect and then the process may end.
  • FIG. 10B illustrates a flow chart of a conceptual process 1050 used by some embodiments to carry out handoff of the aerial platform from a first serving cell site to a second handoff candidate cell site. Such a process may be executed by the active and candidate cell sites.
  • As shown, the process may receive (at 1060), at the southern site radio sub-system, a handoff request message from the aerial platform. Next, the process may send (at 1070) a message to the candidate site from the active site indicating the intent to handoff and a handoff time. The process may then send (at 1080), from the southern site to the paired northern site, a handoff completion message. The northern cell site may then transmit (at 1090) the handoff completion message, including the time handoff will take effect, to the aerial platform.
  • The above description included techniques to protect the satellite terminal receivers from interference from signals sent on the FSS and DBS downlink spectrum by the secondary service to aerial platforms. Some embodiments also allow use of both the downlink spectrum of FSS bands as well as the uplink spectrum of the FSS bands. As mentioned above, the FSS bands of interest are the C, Ku and Ka bands. In order to protect the primary satellite receivers from any signals transmitted by the secondary service on the uplink FSS spectrum, the secondary service transmitters must limit their emissions into the geo-arc (or other group of satellites) below a certain threshold so as not to exceed a certain ROT into the satellite receivers. Secondary service cell site transmitters located on the northern hemisphere, when transmitting on the FSS uplink frequency band, must primarily transmit to the aerial platforms to their north and avoid transmitting to the south where the geo-arc is located. Moreover, the aerial platform antennas must limit their transmissions into the geo-arc below a certain threshold.
  • FIG. 11 illustrates a schematic block diagram of a broadband access system that uses both downlink FSS spectrum, denoted by Fd, and uplink FSS spectrum, denoted by Fu. As in the system described by FIG. 2, the transmissions using the FSS downlink frequency Fd are limited from north to south to avoid transmitting into the main beam of the satellite terminals. As shown in FIG. 11, the uplink frequency Fu is only used by the cell site 110 to transmit toward the north to the aerial platform in order to avoid interfering with the geo-arc to the south. The aerial platform antenna 134 is shown to transmit using the uplink frequency Fu in both the northern and southern directions because the aerial platform antenna transmits its signals toward the ground and away from the geo-arc. Moreover, because the cell site antennas are assumed to have high gain, the cell site receiver may receive a high enough signal even if the aerial platform transmitter is limiting its transmit power to a low level to maintain its emission into the geo-arc below a certain threshold.
  • Note that as shown in FIG. 11, since the southern and northern radio sub-systems 112 are both transmitting and receiving to/from the aerial platform, then it is possible to provide connectivity to the aerial platforms by only having cell site equipment at either the lower or upper corner of each coverage area 160, thereby reducing the complexity of each cell site. However, the benefit of having radio sub-system equipment at both the lower and upper corners of the area is that it allows the area to be larger. Note that as described in reference to FIG. 2 above, the cell site radio sub-system at the upper (northern) corner of the system may have only a radio transmitter and the radio sub-system at the lower (southern) corner of the cell site may have only a radio receiver. In the system shown in FIG. 11, which uses both the FSS uplink and downlink frequencies, Fu and Fd, then the radio sub-systems at the lower and upper corner of the coverage area must each have a radio transmitter and a radio receiver.
  • The detailed description above used the example of a broadband access system deployed in the northern hemisphere. One of ordinary skill in the art will recognize that all systems and methods described above may also apply to a system deployed in the southern hemisphere by reversing the direction of transmissions described in reference to the northern hemisphere implementation.
  • Some embodiments may provide broadband Internet access to ground terminals using aerial platforms such as drones or UAVs. FIG. 12 shows a block diagram of a system providing broadband access to ground terminal 180 via aerial platforms 130 using the downlink FSS spectrum without interfering with the incumbent satellite terminal receivers. Note that FIG. 12 shows the block diagram connecting the aerial platforms and the ground terminals. The details of the system for connecting the aerial platforms to the Internet were described in detail above. In order to avoid interfering with satellite terminal receivers, all transmissions on the downlink FSS spectrum are from north to south for terminals deployed in the northern hemisphere. Aerial platform 130-1 may send messages 232-1 to the ground terminal 180, and the ground terminal may send messages 282 to the aerial platform 130-2 to its south. The two aerial platforms 130-1 and 130-2 are themselves connected to the Internet using the systems and methods described previously in this disclosure, and complete the connectivity between the ground terminal 180 and the Internet.
  • The interference received at the satellite terminal from the ground terminal transmitter is given by equation (3) below:
  • In terference ( dBW ) = Ground_Terminal _PA _Power ( dBW ) + Ground_Terminal _Antenna _Gain _Toward _Satellite _Terminal ( dB ) - Path_Loss _dB - House_Penetration _Loss ( dB ) + Satellite_Receiver _Antenna _Backlobe _Gain ( dB ) - Processing_Gain ( dB ) . ( 3 )
  • As in the case of a cell site antenna, the ground terminal antenna is also designed to have high roll off toward the satellite terminal receivers. All terms in equation (3) are similar to that of equation (1). However, since the ground terminal installed on a house may be very close, say within tens of meters, to a satellite terminal receiver, then an additional measure may need to be taken to further reduce interference from the ground terminal into the satellite terminal receiver. The last term on the right hand side of equation (3), Processing Gain (dB), refers to the ratio of the bandwidth over which the transmit signal is spread to the data rate. Therefore, one technique to reduce the interference is to spread the data over a wider bandwidth, thereby reducing the power spectral density and the ROT. Note that if the data is spread over a wider bandwidth to reduce interference, then the bandwidth efficiency of the system may decrease due to using a larger amount of bandwidth than is normally needed when using spectrum as primary user. To improve the bandwidth efficiency, one may allow multiple uplink ground terminal transmitters to transmit simultaneously on the same bandwidth in a code division multiple access (CDMA) scheme. In the CDMA scheme, multiple ground terminals transmit on the same bandwidth simultaneously but by modulating the data of different terminals using different codes so that the receiver at the aerial platform may separate the data received from different ground terminals.
  • FIG. 13 shows the block diagram of a system that provides broadband access to ground terminal 180 via aerial platforms 130-1 and 130-2 using both the downlink and uplink frequencies of the FSS bands. As shown in FIG. 4, the ground terminal has a bidirectional link to both aerial platforms. The ground terminal transmits on the uplink frequency Fu only to the aerial platform to its north. The aerial platform to the north of the ground terminal may transmit to the ground terminal using the uplink or downlink frequencies. Because both aerial platforms have a bidirectional link to the ground terminal, it is also possible to have the ground terminal communicate via only one aerial platform as shown in FIG. 14.
  • Many of the processes and modules described above may be implemented as software processes that are specified as one or more sets of instructions recorded on a non-transitory storage medium. When these instructions are executed by one or more computational element(s) (e.g., microprocessors, microcontrollers, Digital Signal Processors (DSPs), Application-Specific ICs (ASICs), Field Programmable Gate Arrays (FPGAs), etc.) the instructions cause the computational element(s) to perform actions specified in the instructions.
  • In some embodiments, various processes and modules described above may be implemented completely using electronic circuitry that may include various sets of devices or elements (e.g., sensors, logic gates, analog to digital converters, digital to analog converters, comparators, etc.). Such circuitry may be adapted to perform functions and/or features that may be associated with various software elements described throughout.
  • FIG. 15 illustrates a schematic block diagram of a conceptual computer system 1500 used to implement some embodiments of the invention. For example, the systems described above in reference to FIGS. 1, 2, and 4 may be at least partially implemented using computer system 1500. As another example, the processes described in reference to FIGS. 7A-8B, 10A and 10B may be at least partially implemented using sets of instructions that are executed using computer system 1500.
  • Computer system 1500 may be implemented using various appropriate devices. For instance, the computer system may be implemented using one or more personal computers (“PC”), servers, mobile devices (e.g., a smartphone), tablet devices, and/or any other appropriate devices. The various devices may work alone (e.g., the computer system may be implemented as a single PC) or in conjunction (e.g., some components of the computer system may be provided by a mobile device while other components are provided by a tablet device).
  • As shown, computer system 1500 may include at least one communication bus 1505, one or more processors 1510, a system memory 1515, a read-only memory (ROM) 1520, permanent storage devices 1525, input devices 1530, output devices 1535, various other components 1540 (e.g., a graphics processing unit), and one or more network interfaces 1545.
  • Bus 1505 represents all communication pathways among the elements of computer system 1500. Such pathways may include wired, wireless, optical, and/or other appropriate communication pathways. For example, input devices 1530 and/or output devices 1535 may be coupled to the system 1500 using a wireless connection protocol or system.
  • The processor 1510 may, in order to execute the processes of some embodiments, retrieve instructions to execute and/or data to process from components such as system memory 1515, ROM 1520, and permanent storage device 1525. Such instructions and data may be passed over bus 1505.
  • System memory 1515 may be a volatile read-and-write memory, such as a random access memory (RAM). The system memory may store some of the instructions and data that the processor uses at runtime. The sets of instructions and/or data used to implement some embodiments may be stored in the system memory 1515, the permanent storage device 1525, and/or the read-only memory 1520. ROM 1520 may store static data and instructions that may be used by processor 1510 and/or other elements of the computer system.
  • Permanent storage device 1525 may be a read-and-write memory device. The permanent storage device may be a non-volatile memory unit that stores instructions and data even when computer system 1500 is off or unpowered. Computer system 1500 may use a removable storage device and/or a remote storage device 1560 as the permanent storage device.
  • Input devices 1530 may enable a user to communicate information to the computer system and/or manipulate various operations of the system. The input devices may include keyboards, cursor control devices, audio input devices and/or video input devices. Output devices 1535 may include printers, displays, and/or audio devices. Some or all of the input and/or output devices may be wirelessly or optically connected to the computer system.
  • Other components 1540 may perform various other functions. These functions may include performing specific functions (e.g., graphics processing, sound processing, etc.), providing storage, interfacing with external systems or components, etc.
  • Finally, as shown in FIG. 15, computer system 1500 may be coupled to one or more networks 1550 through one or more network interfaces 1545. For example, computer system 1500 may be coupled to a web server on the Internet such that a web browser executing on computer system 1500 may interact with the web server as a user interacts with an interface that operates in the web browser. Computer system 1500 may be able to access one or more remote storages 1560 and one or more external components 1565 through the network interface 1545 and network 1550. The network interface(s) 1545 may include one or more application programming interfaces (APIs) that may allow the computer system 1500 to access remote systems and/or storages and also may allow remote systems and/or storages to access computer system 1500 (or elements thereof).
  • As used in this specification and any claims of this application, the terms “computer”, “server”, “processor”, and “memory” all refer to electronic devices. These terms exclude people or groups of people. As used in this specification and any claims of this application, the term “non-transitory storage medium” is entirely restricted to tangible, physical objects that store information in a form that is readable by electronic devices. These terms exclude any wireless or other ephemeral signals.
  • It should be recognized by one of ordinary skill in the art that any or all of the components of computer system 1500 may be used in conjunction with the invention. Moreover, one of ordinary skill in the art will appreciate that many other system configurations may also be used in conjunction with the invention or components of the invention.
  • In addition, while the examples shown may illustrate many individual modules as separate elements, one of ordinary skill in the art would recognize that these modules may be combined into a single functional block or element. One of ordinary skill in the art would also recognize that a single module may be divided into multiple modules.
  • The foregoing relates to illustrative details of exemplary embodiments of the invention and modifications may be made without departing from the spirit and scope of the invention as defined by the following claims.

Claims (24)

I claim:
1. A system adapted to provide broadband access to aerial platforms, the system comprising:
at least one aerial platform comprising a radio sub-system adapted to communicate using a fixed satellite service (FSS) download frequency band from among a set of available bands and an antenna tuned to one or more bands from the set of available bands; and
a plurality of cell sites adapted to communicate with the aerial platform using the FSS download frequency band, each cell site including:
a hexagonal coverage area comprising at least a first corner and a second corner;
a wireless radio transmitter at the first corner; and
a wireless radio receiver at the second corner.
2. The system of claim 1, wherein all wireless radio transmissions between the aerial platform and the cell sites are broadcast in a particular geographic direction, wherein the particular geographic direction is south when the system is located in the northern hemisphere and the particular geographic direction is north when the system is located in the southern hemisphere.
3. The system of claim 1 further comprising a terrestrial network adapted to communicatively couple cell site equipment located at the first corner to cell site equipment location at the second corner and cell site equipment associated with a first site from among the plurality of cell sites to cell site equipment associated with at least a second site from among the plurality of cell sites, wherein the wireless radio transmitter is adapted to send signaling messages to the aerial platform on the FSS downlink frequency band and the wireless radio receiver is adapted to receive signaling messages from the aerial platform on the FSS download frequency band and forward the signaling messages to the cell site equipment located at the first corner of the cell site.
4. The system of claim 1, wherein a transmit antenna associated with the aerial platform is adapted to reduce a gain associated with the transmit antenna based at least partly on a distance from the aerial platform to the cell site in order to hold nearly constant a sum of the gain and a path loss.
5. The system of claim 1, wherein a transmit antenna associated with the cell site is adapted to reduce a gain associated with the transmit antenna based at least partly on a distance from the cell site to the aerial platform in order to hold nearly constant a sum of the gain and a path loss.
6. The system of claim 1 further comprising at least one ground terminal comprising:
a receiver adapted to receive signals from at least one aerial platform on the FSS download frequency band;
a transmitter adapted to send signals to at least one aerial platform; and
at least one antenna fixture pointed toward at least one aerial platform.
7. The system of claim 6, wherein a first antenna fixture of the ground terminal is aimed toward a first aerial platform and a second antenna fixture of the ground terminal is aimed toward a second aerial platform and the ground terminal transmits to the first aerial platform and receives from the second aerial platform.
8. A method of associating an aerial platform to a particular cell site from among a set of candidate cell sites in order to provide broadband access to the aerial platform using communications transmitted on a fixed satellite service (FSS) download frequency band, the method comprising:
receiving set of beacon signals, each beacon signal associated with a cell site from the set of candidate cell sites, a beacon signal;
identifying, from among the set of beacon signals, a first beacon signal with a strongest signal quality, the first beacon signal associated with a first cell site;
sending an association request message from the aerial platform to the first cell site; and
receiving an acknowledgement message from the first cell site.
9. The method of claim 8 further comprising, at the first cell site:
receiving the association request message via a first radio sub-system associated with the first cell site;
sending an acknowledgement message from the first radio sub-system to a second radio sub-system associated with the first cell site; and
sending the acknowledgement message from the second radio sub-system to the aerial platform.
10. The method of claim 8 further comprising, at the aerial platform:
measuring downlink signal quality from the first cell site;
determining a highest achievable downlink data rate based at least partly on the measured downlink signal quality;
sending the highest achievable downlink data rate to the first cell site;
receiving a highest achievable uplink data rate from the first cell site; and
transmitting to the first cell site at the highest achievable uplink data rate.
11. The method of claim 10 further comprising, at the first cell site:
measuring uplink signal quality from the aerial platform at a first radio sub-system associated with the first cell site;
determining a highest achievable uplink data rate based at least partly on the measured uplink signal quality;
sending the highest achievable uplink data rate to the aerial platform via a second radio sub-system associated with the first cell site, wherein the first radio sub-system is communicatively coupled to the second radio sub-system;
receiving a highest achievable downlink data rate from the aerial platform; and
transmitting to the aerial platform at the highest achievable downlink data rate.
12. The method of claim 8 further comprising, at the aerial platform:
comparing a beacon signal strength of the first beacon signal to a second beacon signal associated with a second cell site from among the set of candidate cell sites;
determining whether the signal strength of the second beacon signal is within a particular threshold of the signal strength of the first beacon signal;
when determining that the signal strength of the second beacon signal is within the particular threshold of the signal strength of the first beacon signal, sending a handoff request message to the first cell site; and
receiving a handoff completion message from the second cell site.
13. The method of claim 12 further comprising, at the first cell site:
receiving a handoff request message from the aerial platform at a first radio sub-system associated with the first cell site;
sending the handoff request message to the second cell site via a terrestrial connection;
sending a handoff completion message to a second radio sub-system associated with the first cell site; and
transmitting the handoff completion message from the second radio sub-system to the aerial platform.
14. The method of claim 12, wherein the first radio sub-system is located at one of a north corner and a south corner associated with a hexagonal coverage region of the first cell site and the second radio sub-system is located at an opposite corner to the first radio sub-system.
15. A communication system adapted to provide broadband Internet access to aerial platforms, the system comprising:
a plurality of aerial platforms adapted to communicate over at least one fixed satellite service (FSS) frequency band; and
a plurality of cell sites adapted to communicate over at least one FSS frequency band, each cell site associated with a hexagonal coverage area, each cell site comprising:
a first radio sub-system adapted to receive communications from the aerial platforms;
a second radio sub-system adapted to send communications to the aerial platforms; and
a communication link between the first radio sub-system and the second radio sub-system.
16. The system of claim 15, wherein each cell site is associated with a hexagonal coverage area and the first radio sub-system and second radio sub-system are located at opposite corners of the hexagonal coverage area.
17. The system of claim 16, wherein a particular aerial platform is located between the first radio sub-system and the second radio sub-system.
18. The system of claim 17, wherein the first radio sub-system transmits to the aerial platform and the aerial platform transmits to the second radio sub-system along a particular direction.
19. The system of claim 18, wherein the particular direction is south and the system is located in the northern hemisphere.
20. The system of claim 18, wherein the particular direction is north and the system is located in the southern hemisphere.
21. A system adapted to provide broadband access to a set of ground terminals using at least a portion of a fixed satellite service (FSS) frequency band, the system comprising:
a first aerial platform adapted to send data to a particular ground terminal in the set of ground terminals; and
a second aerial platform adapted to receive data from the particular ground terminal,
wherein each ground terminal comprises:
at least one receiver sub-system adapted to receive data from the first aerial platform, and
at least one transmitter sub-system adapted to send data to the second aerial platform.
22. The system of claim 21, wherein multiple transmitter sub-systems may be able to transmit simultaneously on the portion of the FSS frequency band using a code division multiple access scheme.
23. The system of claim 21, wherein the first aerial platform is further adapted to receive data from the particular ground terminal and the particular ground terminal is able to receive data from the first aerial platform on a set of frequencies comprising an uplink and a downlink portion of the FSS frequency band and transmit data to the first aerial platform using a set of frequencies comprising the uplink portion of the FSS frequency band.
24. The system of claim 21, wherein the second aerial platform is further adapted to transmit data to the particular ground terminal and the particular ground terminal is able to receive data from the first second aerial platform on a set of frequencies comprising an uplink portion of the FSS frequency band and transmit data to the second aerial platform using a set of frequencies comprising the downlink portion of the FSS frequency band.
US14/284,079 2014-02-17 2014-05-21 Provision of broadband access to airborne platforms and ground terminals using fixed satellite service and direct broadcast satellite spectra Active 2034-08-20 US9742484B2 (en)

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US14/609,207 Active 2035-05-29 US10187140B2 (en) 2014-02-17 2015-01-29 Unmanned aerial vehicle communication using distributed antenna placement and beam pointing
US14/624,320 Active US10341010B2 (en) 2014-02-17 2015-02-17 Mobility and power management for high altitude platform (HAP) communication systems
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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160161258A1 (en) * 2014-12-09 2016-06-09 Sikorsky Aircraft Corporation Unmanned aerial vehicle control handover planning
US9439092B1 (en) * 2015-07-27 2016-09-06 Sprint Communications Company L.P. Detection of component fault at cell towers
US9479964B2 (en) 2014-04-17 2016-10-25 Ubiqomm Llc Methods and apparatus for mitigating fading in a broadband access system using drone/UAV platforms
US9571180B2 (en) * 2014-10-16 2017-02-14 Ubiqomm Llc Unmanned aerial vehicle (UAV) beam forming and pointing toward ground coverage area cells for broadband access
US9590720B2 (en) 2015-05-13 2017-03-07 Ubiqomm Llc Ground terminal and gateway beam pointing toward an unmanned aerial vehicle (UAV) for network access
US9614608B2 (en) 2014-07-14 2017-04-04 Ubiqomm Llc Antenna beam management and gateway design for broadband access using unmanned aerial vehicle (UAV) platforms
US9660718B2 (en) 2015-05-13 2017-05-23 Ubiqomm, LLC Ground terminal and UAV beam pointing in an unmanned aerial vehicle (UAV) for network access
US9712228B2 (en) 2014-11-06 2017-07-18 Ubiqomm Llc Beam forming and pointing in a network of unmanned aerial vehicles (UAVs) for broadband access
US9853713B2 (en) 2016-05-06 2017-12-26 Ubiqomm Llc Unmanned aerial vehicle (UAV) beam pointing and data rate optimization for high throughput broadband access
US9859972B2 (en) 2014-02-17 2018-01-02 Ubiqomm Llc Broadband access to mobile platforms using drone/UAV background
US9918234B2 (en) 2016-03-07 2018-03-13 At&T Intellectual Property I, L.P. Supplementing network coverage with a fleet of autonomous drones
US20180097560A1 (en) * 2016-10-05 2018-04-05 Ubiqomm, LLC Apparatus and methods to provide communications to aerial platforms
US10313686B2 (en) 2016-09-20 2019-06-04 Gopro, Inc. Apparatus and methods for compressing video content using adaptive projection selection
US10405223B1 (en) 2017-02-14 2019-09-03 Sprint Communications Company L.P. System and methods for intelligent reset delay for cell sites in a network
US10425148B2 (en) * 2017-04-02 2019-09-24 Parviz Jalali Wireless communications system for broadband access to aerial platforms
US10638402B2 (en) * 2015-06-04 2020-04-28 Accenture Global Services Limited Wireless network with unmanned vehicle nodes providing network data connectivity
US10644784B2 (en) * 2017-02-17 2020-05-05 Ahmad Jalali Communications system for providing broadband access to aerial platforms
US10698520B2 (en) * 2019-02-27 2020-06-30 Huawei Technologies Co., Ltd. Force touch-based communication enhancement method and terminal

Families Citing this family (237)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9113347B2 (en) 2012-12-05 2015-08-18 At&T Intellectual Property I, Lp Backhaul link for distributed antenna system
US10009065B2 (en) 2012-12-05 2018-06-26 At&T Intellectual Property I, L.P. Backhaul link for distributed antenna system
US9525524B2 (en) 2013-05-31 2016-12-20 At&T Intellectual Property I, L.P. Remote distributed antenna system
US9999038B2 (en) 2013-05-31 2018-06-12 At&T Intellectual Property I, L.P. Remote distributed antenna system
US8897697B1 (en) 2013-11-06 2014-11-25 At&T Intellectual Property I, Lp Millimeter-wave surface-wave communications
US9209902B2 (en) 2013-12-10 2015-12-08 At&T Intellectual Property I, L.P. Quasi-optical coupler
BR112016021568A2 (en) * 2014-03-19 2018-07-03 Hughes Network Systems Llc apparatus and method for effective transition to low earth orbit (leo) satellite systems
US9681320B2 (en) * 2014-04-22 2017-06-13 Pc-Tel, Inc. System, apparatus, and method for the measurement, collection, and analysis of radio signals utilizing unmanned aerial vehicles
US9881022B2 (en) * 2014-05-20 2018-01-30 Verizon Patent And Licensing Inc. Selection of networks for communicating with unmanned aerial vehicles
US9692101B2 (en) 2014-08-26 2017-06-27 At&T Intellectual Property I, L.P. Guided wave couplers for coupling electromagnetic waves between a waveguide surface and a surface of a wire
US10063280B2 (en) 2014-09-17 2018-08-28 At&T Intellectual Property I, L.P. Monitoring and mitigating conditions in a communication network
US9824592B2 (en) * 2014-09-22 2017-11-21 Vinveli Unmanned Systems, Inc. Method and apparatus for ensuring the operation and integrity of a three-dimensional integrated logistical system
US9615269B2 (en) 2014-10-02 2017-04-04 At&T Intellectual Property I, L.P. Method and apparatus that provides fault tolerance in a communication network
US9685992B2 (en) 2014-10-03 2017-06-20 At&T Intellectual Property I, L.P. Circuit panel network and methods thereof
US9503189B2 (en) 2014-10-10 2016-11-22 At&T Intellectual Property I, L.P. Method and apparatus for arranging communication sessions in a communication system
US9973299B2 (en) 2014-10-14 2018-05-15 At&T Intellectual Property I, L.P. Method and apparatus for adjusting a mode of communication in a communication network
US9762289B2 (en) 2014-10-14 2017-09-12 At&T Intellectual Property I, L.P. Method and apparatus for transmitting or receiving signals in a transportation system
US9769020B2 (en) 2014-10-21 2017-09-19 At&T Intellectual Property I, L.P. Method and apparatus for responding to events affecting communications in a communication network
US9627768B2 (en) 2014-10-21 2017-04-18 At&T Intellectual Property I, L.P. Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith
US9780834B2 (en) 2014-10-21 2017-10-03 At&T Intellectual Property I, L.P. Method and apparatus for transmitting electromagnetic waves
US9653770B2 (en) 2014-10-21 2017-05-16 At&T Intellectual Property I, L.P. Guided wave coupler, coupling module and methods for use therewith
US9802701B1 (en) 2014-10-21 2017-10-31 Joshua Hawes Variable elevation signal acquisition and data collection system and method
US9312919B1 (en) 2014-10-21 2016-04-12 At&T Intellectual Property I, Lp Transmission device with impairment compensation and methods for use therewith
US9520945B2 (en) 2014-10-21 2016-12-13 At&T Intellectual Property I, L.P. Apparatus for providing communication services and methods thereof
US9577306B2 (en) 2014-10-21 2017-02-21 At&T Intellectual Property I, L.P. Guided-wave transmission device and methods for use therewith
US9655034B2 (en) 2014-10-31 2017-05-16 At&T Intellectual Property I, L.P. Transaction sensitive access network discovery and selection
US9680670B2 (en) 2014-11-20 2017-06-13 At&T Intellectual Property I, L.P. Transmission device with channel equalization and control and methods for use therewith
US9800327B2 (en) 2014-11-20 2017-10-24 At&T Intellectual Property I, L.P. Apparatus for controlling operations of a communication device and methods thereof
US9954287B2 (en) 2014-11-20 2018-04-24 At&T Intellectual Property I, L.P. Apparatus for converting wireless signals and electromagnetic waves and methods thereof
US10243784B2 (en) 2014-11-20 2019-03-26 At&T Intellectual Property I, L.P. System for generating topology information and methods thereof
US9544006B2 (en) 2014-11-20 2017-01-10 At&T Intellectual Property I, L.P. Transmission device with mode division multiplexing and methods for use therewith
US9629076B2 (en) 2014-11-20 2017-04-18 At&T Intellectual Property I, L.P. Network edge based access network discovery and selection
US9654173B2 (en) 2014-11-20 2017-05-16 At&T Intellectual Property I, L.P. Apparatus for powering a communication device and methods thereof
US9742462B2 (en) 2014-12-04 2017-08-22 At&T Intellectual Property I, L.P. Transmission medium and communication interfaces and methods for use therewith
US10009067B2 (en) 2014-12-04 2018-06-26 At&T Intellectual Property I, L.P. Method and apparatus for configuring a communication interface
US9689976B2 (en) 2014-12-19 2017-06-27 Xidrone Systems, Inc. Deterent for unmanned aerial systems
US9715009B1 (en) 2014-12-19 2017-07-25 Xidrone Systems, Inc. Deterent for unmanned aerial systems
KR101825419B1 (en) * 2014-12-30 2018-03-22 주식회사 쏠리드 Interference cancellation repeater
CN108469843A (en) * 2014-12-31 2018-08-31 深圳市大疆创新科技有限公司 Mobile object and its antenna automatic aligning method, system
US9479392B2 (en) * 2015-01-08 2016-10-25 Intel Corporation Personal communication drone
US10144036B2 (en) 2015-01-30 2018-12-04 At&T Intellectual Property I, L.P. Method and apparatus for mitigating interference affecting a propagation of electromagnetic waves guided by a transmission medium
US10061018B1 (en) * 2015-02-19 2018-08-28 Zain Naboulsi System for identifying drones
US9876570B2 (en) 2015-02-20 2018-01-23 At&T Intellectual Property I, Lp Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith
US9686653B2 (en) * 2015-03-02 2017-06-20 Sikorsky Aircraft Corporation Predictive directional antenna targeting
US9749013B2 (en) 2015-03-17 2017-08-29 At&T Intellectual Property I, L.P. Method and apparatus for reducing attenuation of electromagnetic waves guided by a transmission medium
US9912655B2 (en) * 2015-03-27 2018-03-06 Amazon Technologies, Inc. Unmanned vehicle message exchange
US10039114B2 (en) * 2015-04-14 2018-07-31 Verizon Patent And Licensing Inc. Radio access network for unmanned aerial vehicles
US9705561B2 (en) 2015-04-24 2017-07-11 At&T Intellectual Property I, L.P. Directional coupling device and methods for use therewith
US10224981B2 (en) 2015-04-24 2019-03-05 At&T Intellectual Property I, Lp Passive electrical coupling device and methods for use therewith
US9948354B2 (en) 2015-04-28 2018-04-17 At&T Intellectual Property I, L.P. Magnetic coupling device with reflective plate and methods for use therewith
US9793954B2 (en) 2015-04-28 2017-10-17 At&T Intellectual Property I, L.P. Magnetic coupling device and methods for use therewith
WO2018049257A1 (en) * 2016-09-08 2018-03-15 Ubiqomm Llc Ground terminal and uav beam pointing in an unmanned aerial vehicle (uav) for network access
US9748626B2 (en) 2015-05-14 2017-08-29 At&T Intellectual Property I, L.P. Plurality of cables having different cross-sectional shapes which are bundled together to form a transmission medium
US9490869B1 (en) 2015-05-14 2016-11-08 At&T Intellectual Property I, L.P. Transmission medium having multiple cores and methods for use therewith
US9871282B2 (en) 2015-05-14 2018-01-16 At&T Intellectual Property I, L.P. At least one transmission medium having a dielectric surface that is covered at least in part by a second dielectric
US10650940B2 (en) 2015-05-15 2020-05-12 At&T Intellectual Property I, L.P. Transmission medium having a conductive material and methods for use therewith
US9917341B2 (en) 2015-05-27 2018-03-13 At&T Intellectual Property I, L.P. Apparatus and method for launching electromagnetic waves and for modifying radial dimensions of the propagating electromagnetic waves
US10103801B2 (en) 2015-06-03 2018-10-16 At&T Intellectual Property I, L.P. Host node device and methods for use therewith
US9912381B2 (en) 2015-06-03 2018-03-06 At&T Intellectual Property I, Lp Network termination and methods for use therewith
US9866309B2 (en) 2015-06-03 2018-01-09 At&T Intellectual Property I, Lp Host node device and methods for use therewith
US10162351B2 (en) 2015-06-05 2018-12-25 At&T Intellectual Property I, L.P. Remote provisioning of a drone resource
US10129706B2 (en) 2015-06-05 2018-11-13 At&T Intellectual Property I, L.P. Context sensitive communication augmentation
US9913139B2 (en) 2015-06-09 2018-03-06 At&T Intellectual Property I, L.P. Signal fingerprinting for authentication of communicating devices
US9997819B2 (en) 2015-06-09 2018-06-12 At&T Intellectual Property I, L.P. Transmission medium and method for facilitating propagation of electromagnetic waves via a core
US9608692B2 (en) 2015-06-11 2017-03-28 At&T Intellectual Property I, L.P. Repeater and methods for use therewith
US10142086B2 (en) 2015-06-11 2018-11-27 At&T Intellectual Property I, L.P. Repeater and methods for use therewith
US9820146B2 (en) 2015-06-12 2017-11-14 At&T Intellectual Property I, L.P. Method and apparatus for authentication and identity management of communicating devices
US9667317B2 (en) 2015-06-15 2017-05-30 At&T Intellectual Property I, L.P. Method and apparatus for providing security using network traffic adjustments
US9467922B1 (en) 2015-06-15 2016-10-11 Amazon Technologies, Inc. Cellular connections between user equipment and wireless stations based on user equipment location and wireless station locations
US9865911B2 (en) 2015-06-25 2018-01-09 At&T Intellectual Property I, L.P. Waveguide system for slot radiating first electromagnetic waves that are combined into a non-fundamental wave mode second electromagnetic wave on a transmission medium
US9509415B1 (en) 2015-06-25 2016-11-29 At&T Intellectual Property I, L.P. Methods and apparatus for inducing a fundamental wave mode on a transmission medium
US9640850B2 (en) 2015-06-25 2017-05-02 At&T Intellectual Property I, L.P. Methods and apparatus for inducing a non-fundamental wave mode on a transmission medium
US9363690B1 (en) 2015-07-10 2016-06-07 Cisco Technology, Inc. Closed-loop optimization of a wireless network using an autonomous vehicle
US9722318B2 (en) 2015-07-14 2017-08-01 At&T Intellectual Property I, L.P. Method and apparatus for coupling an antenna to a device
US10320586B2 (en) 2015-07-14 2019-06-11 At&T Intellectual Property I, L.P. Apparatus and methods for generating non-interfering electromagnetic waves on an insulated transmission medium
US10205655B2 (en) 2015-07-14 2019-02-12 At&T Intellectual Property I, L.P. Apparatus and methods for communicating utilizing an antenna array and multiple communication paths
US9853342B2 (en) 2015-07-14 2017-12-26 At&T Intellectual Property I, L.P. Dielectric transmission medium connector and methods for use therewith
US10044409B2 (en) 2015-07-14 2018-08-07 At&T Intellectual Property I, L.P. Transmission medium and methods for use therewith
US10148016B2 (en) 2015-07-14 2018-12-04 At&T Intellectual Property I, L.P. Apparatus and methods for communicating utilizing an antenna array
US9847566B2 (en) 2015-07-14 2017-12-19 At&T Intellectual Property I, L.P. Method and apparatus for adjusting a field of a signal to mitigate interference
US10033107B2 (en) 2015-07-14 2018-07-24 At&T Intellectual Property I, L.P. Method and apparatus for coupling an antenna to a device
US9628116B2 (en) 2015-07-14 2017-04-18 At&T Intellectual Property I, L.P. Apparatus and methods for transmitting wireless signals
US10170840B2 (en) 2015-07-14 2019-01-01 At&T Intellectual Property I, L.P. Apparatus and methods for sending or receiving electromagnetic signals
US9882257B2 (en) 2015-07-14 2018-01-30 At&T Intellectual Property I, L.P. Method and apparatus for launching a wave mode that mitigates interference
US10341142B2 (en) 2015-07-14 2019-07-02 At&T Intellectual Property I, L.P. Apparatus and methods for generating non-interfering electromagnetic waves on an uninsulated conductor
US9836957B2 (en) 2015-07-14 2017-12-05 At&T Intellectual Property I, L.P. Method and apparatus for communicating with premises equipment
US10033108B2 (en) 2015-07-14 2018-07-24 At&T Intellectual Property I, L.P. Apparatus and methods for generating an electromagnetic wave having a wave mode that mitigates interference
US10090606B2 (en) 2015-07-15 2018-10-02 At&T Intellectual Property I, L.P. Antenna system with dielectric array and methods for use therewith
US9793951B2 (en) 2015-07-15 2017-10-17 At&T Intellectual Property I, L.P. Method and apparatus for launching a wave mode that mitigates interference
US9608740B2 (en) 2015-07-15 2017-03-28 At&T Intellectual Property I, L.P. Method and apparatus for launching a wave mode that mitigates interference
US9912027B2 (en) 2015-07-23 2018-03-06 At&T Intellectual Property I, L.P. Method and apparatus for exchanging communication signals
US9871283B2 (en) 2015-07-23 2018-01-16 At&T Intellectual Property I, Lp Transmission medium having a dielectric core comprised of plural members connected by a ball and socket configuration
US9749053B2 (en) 2015-07-23 2017-08-29 At&T Intellectual Property I, L.P. Node device, repeater and methods for use therewith
US9948333B2 (en) 2015-07-23 2018-04-17 At&T Intellectual Property I, L.P. Method and apparatus for wireless communications to mitigate interference
JP2018532351A (en) 2015-07-27 2018-11-01 ジェンギスコム ホールディングス エルエルシーGenghiscomm Holdings, Llc Aerial repeater in cooperative MIMO system
US9967173B2 (en) 2015-07-31 2018-05-08 At&T Intellectual Property I, L.P. Method and apparatus for authentication and identity management of communicating devices
US9735833B2 (en) 2015-07-31 2017-08-15 At&T Intellectual Property I, L.P. Method and apparatus for communications management in a neighborhood network
US9461706B1 (en) 2015-07-31 2016-10-04 At&T Intellectual Property I, Lp Method and apparatus for exchanging communication signals
US10020587B2 (en) 2015-07-31 2018-07-10 At&T Intellectual Property I, L.P. Radial antenna and methods for use therewith
DE102015013104A1 (en) * 2015-08-22 2017-02-23 Dania Lieselotte Reuter Method for target approach control of unmanned aerial vehicles, in particular delivery docks
US10733894B1 (en) 2015-08-24 2020-08-04 uAvionix Corporation Direct-broadcast remote identification (RID) device for unmanned aircraft systems (UAS)
EP3345418A4 (en) * 2015-09-03 2019-01-23 Rhombus Systems Group, Inc. System for employing cellular telephone networks to operate, control and communicate with unmannded aerial vehicles and remote piloted vehicles
US9904535B2 (en) 2015-09-14 2018-02-27 At&T Intellectual Property I, L.P. Method and apparatus for distributing software
US10009063B2 (en) 2015-09-16 2018-06-26 At&T Intellectual Property I, L.P. Method and apparatus for use with a radio distributed antenna system having an out-of-band reference signal
US10079661B2 (en) 2015-09-16 2018-09-18 At&T Intellectual Property I, L.P. Method and apparatus for use with a radio distributed antenna system having a clock reference
US10136434B2 (en) 2015-09-16 2018-11-20 At&T Intellectual Property I, L.P. Method and apparatus for use with a radio distributed antenna system having an ultra-wideband control channel
US10009901B2 (en) 2015-09-16 2018-06-26 At&T Intellectual Property I, L.P. Method, apparatus, and computer-readable storage medium for managing utilization of wireless resources between base stations
CN108353081A (en) 2015-09-28 2018-07-31 13部门有限公司 Unmanned plane intrusion detection and confrontation
US9769128B2 (en) 2015-09-28 2017-09-19 At&T Intellectual Property I, L.P. Method and apparatus for encryption of communications over a network
US10075875B2 (en) * 2015-09-29 2018-09-11 International Business Machines Corporation Adaptive network with interconnected autonomous devices
US9729197B2 (en) 2015-10-01 2017-08-08 At&T Intellectual Property I, L.P. Method and apparatus for communicating network management traffic over a network
US9882277B2 (en) 2015-10-02 2018-01-30 At&T Intellectual Property I, Lp Communication device and antenna assembly with actuated gimbal mount
US9876264B2 (en) 2015-10-02 2018-01-23 At&T Intellectual Property I, Lp Communication system, guided wave switch and methods for use therewith
EP3363072A1 (en) 2015-10-14 2018-08-22 Telefonaktiebolaget LM Ericsson (PUBL) Antenna alignment using unmanned aerial vehicle
US10207590B2 (en) * 2015-10-15 2019-02-19 T-Mobile Usa, Inc. Dynamic wireless communications network with a plurality of aerial drones
US10355367B2 (en) 2015-10-16 2019-07-16 At&T Intellectual Property I, L.P. Antenna structure for exchanging wireless signals
US10665942B2 (en) 2015-10-16 2020-05-26 At&T Intellectual Property I, L.P. Method and apparatus for adjusting wireless communications
US20170146990A1 (en) * 2015-11-19 2017-05-25 Caterpillar Inc. Augmented communication and positioning using unmanned aerial vehicles
WO2017139001A2 (en) * 2015-11-24 2017-08-17 Droneshield, Llc Drone detection and classification with compensation for background clutter sources
US10135521B2 (en) 2015-12-16 2018-11-20 Hughes Network Systems, Llc System and method of predictive satellite spot beam selection
CN105553780B (en) * 2016-01-08 2018-10-26 同济大学 There is the car networking connectivity modeling deduction method of infrastructure in a kind of City scenarios
CN107027090B (en) * 2016-02-02 2020-04-21 华为技术有限公司 Network communication method and device
US20170227470A1 (en) * 2016-02-04 2017-08-10 Proxy Technologies, Inc. Autonomous vehicle, system and method for structural object assessment and manufacture thereof
CA3013972A1 (en) * 2016-02-12 2017-08-17 Aeronet Global Communications Labs Dac Aerial vehicle management for an aeronautical communications network
US9788260B2 (en) 2016-02-16 2017-10-10 At&T Intellectual Property I, L.P. Methods and apparatus to network unmanned aerial vehicles (UAVs)
US10048684B2 (en) 2016-02-19 2018-08-14 At&T Intellectual Property I, L.P. Management of deployed drones
US10539649B2 (en) * 2016-03-28 2020-01-21 Michael L. Howard System and methods for detecting a position using differential attenuation
US10395542B2 (en) * 2016-03-28 2019-08-27 Cisco Technology, Inc. Drone traffic engineering
US10404369B2 (en) * 2016-06-07 2019-09-03 Siklu Communication ltd. Systems and methods for using drones for determining line-of-sight conditions in wireless networks
US10148343B2 (en) 2016-04-04 2018-12-04 At&T Intellectual Property I, L.P. Drone base station companion
WO2017180561A1 (en) * 2016-04-13 2017-10-19 Wal-Mart Stores, Inc. Providing wireless internet access using autonomous vehicles
RU2018137880A3 (en) 2016-04-18 2020-05-19
CN105955291A (en) * 2016-04-29 2016-09-21 深圳市哈博森科技有限公司 Unmanned plane flight route track recording and automatic flight control mode
WO2017193083A1 (en) * 2016-05-06 2017-11-09 Ubiqomm Llc Unmanned aerial vehicle (uav) beam pointing and data rate optimization for high throughput broadband access
CN106533535A (en) * 2016-05-06 2017-03-22 中国人民解放军海军工程大学 Long wave transmission system based on aerial platform
CN105818961A (en) * 2016-05-13 2016-08-03 黄剑锋 Multi-antenna and fuselage integrated unmanned aerial vehicle
US9973268B1 (en) * 2016-05-16 2018-05-15 Google Llc Reusing frequencies among high altitude platforms
US10371794B2 (en) * 2016-05-26 2019-08-06 The Boeing Company Unmanned aerial vehicle with deployable transmit/receive module apparatus with ramjet
US10464669B2 (en) * 2016-06-24 2019-11-05 Cisco Technology, Inc. Unmanned aerial vehicle collision avoidance system
US20180013193A1 (en) * 2016-07-06 2018-01-11 Google Inc. Channel reconfigurable millimeter-wave radio frequency system by frequency-agile transceivers and dual antenna apertures
US10511091B2 (en) * 2016-07-15 2019-12-17 Qualcomm Incorporated Dynamic beam steering for unmanned aerial vehicles
US9949138B2 (en) 2016-07-28 2018-04-17 At&T Intellectual Property I, L.P. Systems and methods to augment the capacities and capabilities of cellular networks through an unmanned aerial vehicle network overlay
CN107689828B (en) 2016-08-04 2019-12-24 柯莉娟 Method for recovering communication transmission function in aircraft by unmanned aerial vehicle
TWI672014B (en) * 2016-08-04 2019-09-11 柯莉娟 A method of using a uav as an electromagnetic wave transmission relay station to realize the self-recovery communication transmission function by intensifying electromagnetic waves or by initiating the electronic device installed in any aerial and space
US9912419B1 (en) 2016-08-24 2018-03-06 At&T Intellectual Property I, L.P. Method and apparatus for managing a fault in a distributed antenna system
US9860075B1 (en) 2016-08-26 2018-01-02 At&T Intellectual Property I, L.P. Method and communication node for broadband distribution
US20180191439A1 (en) * 2016-09-08 2018-07-05 Equinox Innovative Systems Llc Drone-based radio-over-fiber system
US10291311B2 (en) 2016-09-09 2019-05-14 At&T Intellectual Property I, L.P. Method and apparatus for mitigating a fault in a distributed antenna system
US10524185B2 (en) * 2016-09-17 2019-12-31 Hughes Network Systems, Llc Radio resource management and routing for fixed data circuits in an NGSO satellite data communications system
US10020872B2 (en) * 2016-10-11 2018-07-10 T-Mobile Usa, Inc. UAV for cellular communication
CN109845306A (en) * 2016-10-11 2019-06-04 T移动美国公司 UAV for cellular communication
US10135147B2 (en) 2016-10-18 2018-11-20 At&T Intellectual Property I, L.P. Apparatus and methods for launching guided waves via an antenna
US10135146B2 (en) 2016-10-18 2018-11-20 At&T Intellectual Property I, L.P. Apparatus and methods for launching guided waves via circuits
US10340600B2 (en) 2016-10-18 2019-07-02 At&T Intellectual Property I, L.P. Apparatus and methods for launching guided waves via plural waveguide systems
US10374316B2 (en) 2016-10-21 2019-08-06 At&T Intellectual Property I, L.P. System and dielectric antenna with non-uniform dielectric
US9876605B1 (en) 2016-10-21 2018-01-23 At&T Intellectual Property I, L.P. Launcher and coupling system to support desired guided wave mode
US9991580B2 (en) 2016-10-21 2018-06-05 At&T Intellectual Property I, L.P. Launcher and coupling system for guided wave mode cancellation
US10340573B2 (en) 2016-10-26 2019-07-02 At&T Intellectual Property I, L.P. Launcher with cylindrical coupling device and methods for use therewith
US10312567B2 (en) 2016-10-26 2019-06-04 At&T Intellectual Property I, L.P. Launcher with planar strip antenna and methods for use therewith
US10291334B2 (en) 2016-11-03 2019-05-14 At&T Intellectual Property I, L.P. System for detecting a fault in a communication system
US10224634B2 (en) 2016-11-03 2019-03-05 At&T Intellectual Property I, L.P. Methods and apparatus for adjusting an operational characteristic of an antenna
US10225025B2 (en) 2016-11-03 2019-03-05 At&T Intellectual Property I, L.P. Method and apparatus for detecting a fault in a communication system
US10498044B2 (en) 2016-11-03 2019-12-03 At&T Intellectual Property I, L.P. Apparatus for configuring a surface of an antenna
FR3058609A1 (en) * 2016-11-08 2018-05-11 Orange Asynchronous synchronization with a mobile communication network
US10470241B2 (en) 2016-11-15 2019-11-05 At&T Intellectual Property I, L.P. Multiple mesh drone communication
US10340603B2 (en) 2016-11-23 2019-07-02 At&T Intellectual Property I, L.P. Antenna system having shielded structural configurations for assembly
US10340601B2 (en) 2016-11-23 2019-07-02 At&T Intellectual Property I, L.P. Multi-antenna system and methods for use therewith
US10090594B2 (en) 2016-11-23 2018-10-02 At&T Intellectual Property I, L.P. Antenna system having structural configurations for assembly
US10535928B2 (en) 2016-11-23 2020-01-14 At&T Intellectual Property I, L.P. Antenna system and methods for use therewith
US10178445B2 (en) 2016-11-23 2019-01-08 At&T Intellectual Property I, L.P. Methods, devices, and systems for load balancing between a plurality of waveguides
US10305190B2 (en) 2016-12-01 2019-05-28 At&T Intellectual Property I, L.P. Reflecting dielectric antenna system and methods for use therewith
US10361489B2 (en) 2016-12-01 2019-07-23 At&T Intellectual Property I, L.P. Dielectric dish antenna system and methods for use therewith
US10382976B2 (en) 2016-12-06 2019-08-13 At&T Intellectual Property I, L.P. Method and apparatus for managing wireless communications based on communication paths and network device positions
US10694379B2 (en) 2016-12-06 2020-06-23 At&T Intellectual Property I, L.P. Waveguide system with device-based authentication and methods for use therewith
US9927517B1 (en) 2016-12-06 2018-03-27 At&T Intellectual Property I, L.P. Apparatus and methods for sensing rainfall
US10637149B2 (en) 2016-12-06 2020-04-28 At&T Intellectual Property I, L.P. Injection molded dielectric antenna and methods for use therewith
US10326494B2 (en) 2016-12-06 2019-06-18 At&T Intellectual Property I, L.P. Apparatus for measurement de-embedding and methods for use therewith
US10135145B2 (en) 2016-12-06 2018-11-20 At&T Intellectual Property I, L.P. Apparatus and methods for generating an electromagnetic wave along a transmission medium
US10755542B2 (en) 2016-12-06 2020-08-25 At&T Intellectual Property I, L.P. Method and apparatus for surveillance via guided wave communication
US10727599B2 (en) 2016-12-06 2020-07-28 At&T Intellectual Property I, L.P. Launcher with slot antenna and methods for use therewith
US10439675B2 (en) 2016-12-06 2019-10-08 At&T Intellectual Property I, L.P. Method and apparatus for repeating guided wave communication signals
US10020844B2 (en) 2016-12-06 2018-07-10 T&T Intellectual Property I, L.P. Method and apparatus for broadcast communication via guided waves
US10168695B2 (en) 2016-12-07 2019-01-01 At&T Intellectual Property I, L.P. Method and apparatus for controlling an unmanned aircraft
US10027397B2 (en) 2016-12-07 2018-07-17 At&T Intellectual Property I, L.P. Distributed antenna system and methods for use therewith
US10547348B2 (en) 2016-12-07 2020-01-28 At&T Intellectual Property I, L.P. Method and apparatus for switching transmission mediums in a communication system
US9893795B1 (en) 2016-12-07 2018-02-13 At&T Intellectual Property I, Lp Method and repeater for broadband distribution
US10446936B2 (en) 2016-12-07 2019-10-15 At&T Intellectual Property I, L.P. Multi-feed dielectric antenna system and methods for use therewith
US10359749B2 (en) 2016-12-07 2019-07-23 At&T Intellectual Property I, L.P. Method and apparatus for utilities management via guided wave communication
US10243270B2 (en) 2016-12-07 2019-03-26 At&T Intellectual Property I, L.P. Beam adaptive multi-feed dielectric antenna system and methods for use therewith
US10139820B2 (en) 2016-12-07 2018-11-27 At&T Intellectual Property I, L.P. Method and apparatus for deploying equipment of a communication system
US10389029B2 (en) 2016-12-07 2019-08-20 At&T Intellectual Property I, L.P. Multi-feed dielectric antenna system with core selection and methods for use therewith
US9911020B1 (en) 2016-12-08 2018-03-06 At&T Intellectual Property I, L.P. Method and apparatus for tracking via a radio frequency identification device
US10601494B2 (en) 2016-12-08 2020-03-24 At&T Intellectual Property I, L.P. Dual-band communication device and method for use therewith
US10411356B2 (en) 2016-12-08 2019-09-10 At&T Intellectual Property I, L.P. Apparatus and methods for selectively targeting communication devices with an antenna array
US10326689B2 (en) 2016-12-08 2019-06-18 At&T Intellectual Property I, L.P. Method and system for providing alternative communication paths
US10103422B2 (en) 2016-12-08 2018-10-16 At&T Intellectual Property I, L.P. Method and apparatus for mounting network devices
US10389037B2 (en) 2016-12-08 2019-08-20 At&T Intellectual Property I, L.P. Apparatus and methods for selecting sections of an antenna array and use therewith
US9998870B1 (en) 2016-12-08 2018-06-12 At&T Intellectual Property I, L.P. Method and apparatus for proximity sensing
US10530505B2 (en) 2016-12-08 2020-01-07 At&T Intellectual Property I, L.P. Apparatus and methods for launching electromagnetic waves along a transmission medium
US10069535B2 (en) 2016-12-08 2018-09-04 At&T Intellectual Property I, L.P. Apparatus and methods for launching electromagnetic waves having a certain electric field structure
US9838896B1 (en) 2016-12-09 2017-12-05 At&T Intellectual Property I, L.P. Method and apparatus for assessing network coverage
US10264586B2 (en) 2016-12-09 2019-04-16 At&T Mobility Ii Llc Cloud-based packet controller and methods for use therewith
US10340983B2 (en) 2016-12-09 2019-07-02 At&T Intellectual Property I, L.P. Method and apparatus for surveying remote sites via guided wave communications
US9866313B1 (en) * 2016-12-14 2018-01-09 T-Mobile Usa, Inc. UAV cellular communication service delivery
US9973261B1 (en) * 2016-12-28 2018-05-15 Echostar Technologies Llc Rapidly-deployable, drone-based wireless communications systems and methods for the operation thereof
US9973940B1 (en) 2017-02-27 2018-05-15 At&T Intellectual Property I, L.P. Apparatus and methods for dynamic impedance matching of a guided wave launcher
US10034209B1 (en) * 2017-03-10 2018-07-24 Qualcomm Incorporated Traffic offloading for a communication drone
US10298293B2 (en) 2017-03-13 2019-05-21 At&T Intellectual Property I, L.P. Apparatus of communication utilizing wireless network devices
US10418694B2 (en) 2017-03-22 2019-09-17 At&T Mobility Ii Llc Antenna system for unmanned aerial vehicle
EP3602228A1 (en) * 2017-03-22 2020-02-05 Nokia Technologies Oy Systems and apparatuses for detecting unmanned aerial vehicle
WO2018170862A1 (en) * 2017-03-23 2018-09-27 深圳市大疆创新科技有限公司 Aerial vehicle and external device thereof, and communication method, apparatus and system
US10567070B2 (en) * 2017-04-02 2020-02-18 Ahmad Jalali Air to ground network for broadband access to aerial platforms
US10356636B2 (en) 2017-04-03 2019-07-16 Qualcomm Incorporated Techniques and apparatuses to improve drone-mounted user equipment performance
CN108736161A (en) * 2017-04-14 2018-11-02 京东方科技集团股份有限公司 Mobile device and mobile device directional aerial adjusting method
FR3067190B1 (en) * 2017-06-01 2020-05-29 Thales Intermediate network comprising stations placed on high-altitude platforms for radio communication system
WO2019024038A1 (en) * 2017-08-03 2019-02-07 北京小米移动软件有限公司 Base station switching method and apparatus
US10317905B2 (en) * 2017-08-10 2019-06-11 RavenOPS, Inc. Autonomous robotic technologies for industrial inspection
US20190077524A1 (en) * 2017-09-10 2019-03-14 Space Arena, Inc. Enclosures for facilitating activities in space, and associated systems and methods
CN107682881A (en) * 2017-09-14 2018-02-09 深圳市共进电子股份有限公司 Method for parameter configuration, device, repeater and the storage medium of wireless repeater
CN109561474A (en) * 2017-09-26 2019-04-02 株式会社Ntt都科摩 Cell selection or cut-in method, user terminal, maintaining method and base station
US10670460B1 (en) 2017-10-16 2020-06-02 Alakai Defense Systems, Inc. Multi-static Raman LIDAR
WO2019084871A1 (en) * 2017-11-02 2019-05-09 北京小米移动软件有限公司 Transmitting method and device for flight information of unmanned aerial vehicle, base station and core network device
CN108123749A (en) * 2017-11-29 2018-06-05 中国人民解放军陆军工程大学 A kind of communication relay backs up unmanned mobile device, topological system and construction method
TWI656758B (en) * 2017-12-01 2019-04-11 財團法人工業技術研究院 Communication terminal device and a mobile communication method applicable aircraft
CN107994939A (en) * 2017-12-04 2018-05-04 中国人民解放军陆军工程大学 A kind of adaptive microwave communication data chain based on unmanned plane dynamic trunking
US20190199425A1 (en) * 2017-12-22 2019-06-27 Telcom Ventures, Llc Interference reduction from terrestrial base station transmission to fixed satellite service
WO2019129342A1 (en) * 2017-12-27 2019-07-04 Telefonaktiebolaget Lm Ericsson (Publ) A method of and radio access devices for handover of radio communications of user equipment operating through an intermediate mobile radio access device
US20200252838A1 (en) * 2017-12-30 2020-08-06 Intel Corporation Handover-related technology, apparatuses, and methods
US20190230568A1 (en) * 2018-01-19 2019-07-25 Hughes Network Systems, Llc User terminal handover prediction in wireless communications systems with nonstationary communications platforms
US10574339B2 (en) 2018-02-27 2020-02-25 Microsoft Technology Licensing, Llc Network access from airborne vehicle
US10468758B1 (en) 2018-05-07 2019-11-05 Virtual Em Inc. Zero weight airborne antenna with near perfect radiation efficiency utilizing conductive airframe elements and method
US10644384B1 (en) 2018-05-07 2020-05-05 Virtual Em Inc. Zero weight airborne antenna with near perfect radiation efficiency utilizing conductive airframe elements and method
US20190369201A1 (en) * 2018-05-31 2019-12-05 Qualcomm Incorporated Positioning methods for wireless networks that utilize beamformed communication
JP6643409B2 (en) * 2018-06-22 2020-02-12 Hapsモバイル株式会社 Flight formation and communication area control of air vehicles that provide wireless communication services
WO2020005436A1 (en) * 2018-06-25 2020-01-02 Trilliant Networks, Inc. Method and system for automatic antenna alignment
CN109041253A (en) * 2018-09-06 2018-12-18 北京遥测技术研究所 Diversity cut-in method and system in unmanned plane cluster observing and controlling based on iterative detection
CN111200486A (en) * 2018-11-19 2020-05-26 华为技术有限公司 Method and apparatus for wireless communication

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4455651A (en) * 1980-10-20 1984-06-19 Equatorial Communications Company Satellite communications system and apparatus
US6760593B1 (en) * 1997-01-30 2004-07-06 At&T Corp. Cellular communication system with virtual antennas
US20060030311A1 (en) * 1992-03-06 2006-02-09 Aircell, Inc. System for managing call handoffs between an aircraft and multiple cell sites
US20110263199A1 (en) * 2003-12-07 2011-10-27 Gogo Llc Spectrum sharing between an aircraft-based air-to-ground communication system and existing geostationary satellite services
US20140139395A1 (en) * 2012-11-16 2014-05-22 Max Solondz Multi-sector antenna structure
EP2447929B1 (en) * 2010-10-26 2015-06-24 SELEX ES S.p.A. Ground station, network and method for a unified ground-to-air and air-to-ground communication system operating in VHF data link mode 2 technology

Family Cites Families (178)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891985A (en) 1961-02-21 1975-06-24 Sperry Rand Corp Drone control system with pulse position encoding
US3568197A (en) 1969-12-05 1971-03-02 Nasa Antenna array phase quadrature tracking system
US3780303A (en) 1971-09-20 1973-12-18 Texaco Inc Pulsed neutron logging with background compensation
US4209695A (en) 1976-12-06 1980-06-24 Texaco Inc. Detection of impurities in fluid flowing in refinery pipeline or oil production operations using nuclear techniques
US4317993A (en) 1978-01-16 1982-03-02 Schlumberger Technology Corporation Methods and apparatus for constituent analysis of earth formations
FI56904C (en) 1978-05-04 1980-04-10 Outokumpu Oy Procedure for maintenance of ground hemes and hard material enligges infaongningsgammamododen
US4365154A (en) 1980-03-06 1982-12-21 Texaco Inc. Detection of impurities in a fluid containing free gas using nuclear techniques
US4387302A (en) 1980-12-30 1983-06-07 Mobil Oil Corporation Measuring of gamma-ray energy due to inelastic neutron scattering
US4499380A (en) 1982-10-21 1985-02-12 Esso Resources Canada, Ltd. Apparatus and method for determining the hydrogen content of a substance
JPS6141979A (en) 1984-08-06 1986-02-28 Nec Corp Radio wave receiving device
US4879711A (en) 1986-08-14 1989-11-07 Hughes Aircraft Company Satellite communications system employing frequency reuse
US4851687A (en) 1987-01-13 1989-07-25 Scientific Innovations, Inc. Detection of nitrogen in explosives
GB8726477D0 (en) 1987-11-12 1987-12-16 Atomic Energy Authority Uk Analysis using neutrons
US5098640A (en) 1990-01-10 1992-03-24 Science Applications International Corporation Apparatus and method for detecting contraband using fast neutron activation
US5076993A (en) 1990-01-12 1991-12-31 Science Applications International Corporation Contraband detection system using direct imaging pulsed fast neutrons
US5835857A (en) 1990-03-19 1998-11-10 Celsat America, Inc. Position determination for reducing unauthorized use of a communication system
US5021664A (en) 1990-06-22 1991-06-04 Tennelec/Nucleus, Inc. Method and apparatus for correcting the energy resolution of ionizing radiation spectrometers
US5239568A (en) 1990-10-29 1993-08-24 Scinticor Incorporated Radiation collimator system
US5241544A (en) 1991-11-01 1993-08-31 Motorola, Inc. Multi-channel tdm communication system slot phase correction
US5642122A (en) 1991-11-08 1997-06-24 Teledesic Corporation Spacecraft antennas and beam steering methods for satellite communciation system
US7113780B2 (en) * 1992-03-06 2006-09-26 Aircell, Inc. System for integrating an airborne wireless cellular network with terrestrial wireless cellular networks and the public switched telephone network
US8914022B2 (en) * 1992-03-06 2014-12-16 Gogo Llc System for providing high speed communications service in an airborne wireless cellular network
US6393281B1 (en) * 1993-03-26 2002-05-21 At&T Wireless Services Inc Seamless hand-off for air-to-ground systems
JP2513405B2 (en) 1993-06-11 1996-07-03 日本電気株式会社 Dual frequency array antenna
AUPM616794A0 (en) 1994-06-09 1994-07-07 Commonwealth Scientific And Industrial Research Organisation Determination of pre-reduction degree in iron ore materials
GB2293725B (en) 1994-07-22 1999-02-10 Int Maritime Satellite Organiz Satellite communication method and apparatus
US5521817A (en) 1994-08-08 1996-05-28 Honeywell Inc. Airborne drone formation control system
US5697055A (en) * 1994-10-16 1997-12-09 Qualcomm Incorporated Method and apparatus for handoff between different cellular communications systems
JP3045076B2 (en) 1996-07-17 2000-05-22 日本電気株式会社 Non-telephone call connection system
US6018659A (en) 1996-10-17 2000-01-25 The Boeing Company Airborne broadband communication network
US5974317A (en) 1996-11-08 1999-10-26 Lucent Technologies, Inc. Cell-clustering arrangements and corresponding antenna patterns for wireless communication networks employing high-altitude aeronautical antenna platforms
US5859620A (en) 1996-11-27 1999-01-12 Hughes Electronics Corporation Multiband feedhorn mount assembly for ground satellite receiving antenna
US7123919B1 (en) 1997-01-30 2006-10-17 At&T Corp. Cellular communication system with virtual antennas
US6044323A (en) * 1997-10-20 2000-03-28 Motorola, Inc. Satellite based commercial and military intercity and intercontinental air traffic control
US6034634A (en) * 1997-10-24 2000-03-07 Telefonaktiebolaget L M Ericsson (Publ) Terminal antenna for communications systems
US6061562A (en) 1997-10-30 2000-05-09 Raytheon Company Wireless communication using an airborne switching node
US6108538A (en) 1997-12-01 2000-08-22 Motorola, Inc. Method and apparatus for dynamically controlling hand-off thresholds in a satellite cellular communication system
US6144032A (en) 1998-05-07 2000-11-07 Gazdzinski; Robert F. Method and apparatus for measuring the condition of degradable components
US6256476B1 (en) 1998-06-25 2001-07-03 Conexant Systems, Inc. Power management for a telephone system by dynamically adjusting transmission power
US6167036A (en) 1998-11-24 2000-12-26 Nortel Networks Limited Method and apparatus for a sectored cell of a cellular radio communications system
JP2000295152A (en) 1999-04-01 2000-10-20 Matsushita Electric Ind Co Ltd Radio communication system adopting array antenna
US6421528B1 (en) 1999-04-29 2002-07-16 Hughes Electronics Corp. Satellite transmission system with adaptive transmission loss compensation
US6281838B1 (en) 1999-04-30 2001-08-28 Rockwell Science Center, Llc Base-3 switched-line phase shifter using micro electro mechanical (MEMS) technology
US7356390B2 (en) 1999-06-29 2008-04-08 Space Data Corporation Systems and applications of lighter-than-air (LTA) platforms
US6628941B2 (en) * 1999-06-29 2003-09-30 Space Data Corporation Airborne constellation of communications platforms and method
CA2316440A1 (en) * 1999-08-31 2001-02-28 Lucent Technologies Inc. System for performing handoffs using location information for a wireless unit
CA2403777A1 (en) * 2000-04-14 2001-10-25 Aerovironment, Inc. Active antenna communication system
US6718161B1 (en) * 2000-06-05 2004-04-06 Northrop Grumman Corporation Apparatus and method for reducing latency and buffering associated with multiple access communications systems
US6756937B1 (en) 2000-06-06 2004-06-29 The Directv Group, Inc. Stratospheric platforms based mobile communications architecture
US6388615B1 (en) 2000-06-06 2002-05-14 Hughes Electronics Corporation Micro cell architecture for mobile user tracking communication system
US6856803B1 (en) 2000-06-26 2005-02-15 Motorola, Inc. Method for maintaining candidate handoff list for airborne cellular system
GB2366483A (en) 2000-08-21 2002-03-06 Lucent Technologies Inc A method of delivering packets to a roaming mobile
US6513758B1 (en) * 2000-08-21 2003-02-04 Hughes Electronics Corporation High altitude platform control system
US6810249B1 (en) 2000-09-19 2004-10-26 The Directv Group, Inc. Method and system of efficient spectrum utilization by communications satellites
US6952580B2 (en) * 2000-12-12 2005-10-04 The Directv Group, Inc. Multiple link internet protocol mobile communications system and method therefor
US6745034B2 (en) * 2000-12-22 2004-06-01 Nokia Corporation Apparatus, and associated method, for adaptively selecting a handoff threshold in a radio communication system
US6671589B2 (en) * 2001-02-13 2003-12-30 William Holst Method and apparatus to support remote and automatically initiated data loading and data acquisition of airborne computers using a wireless spread spectrum aircraft data services link
US7043199B2 (en) 2001-06-06 2006-05-09 Hughes Network Systems Llc Uplink power control system for satellite communication system employing on-board satellite processing and fade estimation
US6784838B2 (en) 2001-11-09 2004-08-31 Ems Technologies, Inc. Beamformer for multi-beam receive antenna
US7911400B2 (en) * 2004-01-07 2011-03-22 Raysat Antenna Systems, L.L.C. Applications for low profile two-way satellite antenna system
US7260054B2 (en) 2002-05-30 2007-08-21 Denso Corporation SINR measurement method for OFDM communications systems
US7925291B2 (en) 2003-08-13 2011-04-12 Qualcomm Incorporated User specific downlink power control channel Q-bit
US6847809B2 (en) 2002-08-23 2005-01-25 Qualcomm Incorporated Wireless communication data rate control prediction method and system
US7082305B2 (en) 2002-11-22 2006-07-25 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for generating a neighbor cell list
JP4096724B2 (en) 2002-12-12 2008-06-04 日本電気株式会社 Multi-beam antenna receiving apparatus and multi-beam receiving method
US20040229563A1 (en) * 2003-02-14 2004-11-18 Kabushiki Kaisha Toshiba Communication network for indoor environment
GR1004638B (en) * 2003-07-08 2004-07-23 Atmelαcorporationαα Method and system for seamless mobility of mobile terminals in a wireless network
DK1654561T3 (en) 2003-08-14 2012-10-22 Saab Sensis Corp Target location using a distributed TDOA antenna
US20050042984A1 (en) * 2003-08-21 2005-02-24 Reliable System Services Corp. Apparatus and techniques for maximizing satellite link availability in the presence of satellite system induced random disconnections
KR100689508B1 (en) * 2003-09-04 2007-03-02 삼성전자주식회사 Method for performing handover in a communication system
US7525934B2 (en) * 2003-09-24 2009-04-28 Qualcomm Incorporated Mixed reuse of feeder link and user link bandwidth
US6873301B1 (en) 2003-10-07 2005-03-29 Bae Systems Information And Electronic Systems Integration Inc. Diamond array low-sidelobes flat-plate antenna systems for satellite communication
US7187950B2 (en) * 2003-11-14 2007-03-06 Intel Corporation Command station for mobile radio networks
US20050108374A1 (en) 2003-11-14 2005-05-19 Pierzga Wayne F. Airborne radio relay system
EP1704656A4 (en) 2003-12-29 2011-08-17 Peersat Llc Inter-satellite crosslink communications system, apparatus, method and computer program product
US7646752B1 (en) * 2003-12-31 2010-01-12 Nortel Networks Limited Multi-hop wireless backhaul network and method
CA2505433A1 (en) 2004-04-27 2005-10-27 Intelwaves Technologies Ltd. Low profile hybrid phased array antenna system configuration and element
US7132975B2 (en) 2004-05-28 2006-11-07 Time Domain Corporation Apparatus and method for detecting moving objects
US7333047B2 (en) 2004-05-28 2008-02-19 Time Domain Corporation System and method for spatially diverse radar signal processing
US20060009262A1 (en) 2004-07-09 2006-01-12 The Boeing Company Avionic base station controller (ABSC) for aircraft-based cellular communications
US7095376B1 (en) 2004-11-30 2006-08-22 L3 Communications Corporation System and method for pointing and control of an antenna
CN101341771A (en) * 2005-03-29 2009-01-07 高通股份有限公司 Communications handoff using an adaptive antenna
US7379750B2 (en) 2005-03-29 2008-05-27 Qualcomm Incorporated Communications handoff using an adaptive antenna
US9306657B2 (en) * 2005-04-08 2016-04-05 The Boeing Company Soft handoff method and apparatus for mobile vehicles using directional antennas
JP4772039B2 (en) 2005-04-28 2011-09-14 パナソニック株式会社 Communication relay device and communication relay method
US7212170B1 (en) 2005-05-12 2007-05-01 Lockheed Martin Corporation Antenna beam steering via beam-deflecting lens and single-axis mechanical rotator
KR100877136B1 (en) * 2005-06-23 2009-01-07 삼성전자주식회사 Apparatus and method for processing hand-off between heterogeneous networks in wireless communication system
US7548787B2 (en) 2005-08-03 2009-06-16 Kamilo Feher Medical diagnostic and communication system
EP1758312A1 (en) 2005-08-26 2007-02-28 Matsushita Electric Industrial Co., Ltd. Scheduling depending on quality of service and channel properties
KR100827169B1 (en) * 2005-09-21 2008-05-02 삼성전자주식회사 Method for handoff in a communication system with smart antenna
US7633427B2 (en) 2005-10-20 2009-12-15 Kinetx, Inc. Active imaging using satellite communication system
WO2007084682A1 (en) 2006-01-20 2007-07-26 Atc Technologies, Llc Systems and methods for forward link closed loop beamforming
US7864732B2 (en) 2006-01-27 2011-01-04 Mediatek Inc. Systems and methods for handoff in wireless network
US20070230419A1 (en) 2006-03-31 2007-10-04 Sundar Raman QoS signaling to support fairness
US8249586B2 (en) 2006-06-02 2012-08-21 The Boeing Company Airborne emergency cell phone router
US7581702B2 (en) 2006-06-09 2009-09-01 Insitu, Inc. Wirelessly controlling unmanned aircraft and accessing associated surveillance data
US7636074B2 (en) 2006-06-28 2009-12-22 Eastman Kodak Company Active matrix display compensating apparatus
US8477593B2 (en) 2006-07-28 2013-07-02 Qualcomm Incorporated Method and apparatus for sending signaling for data transmission in a wireless communication system
KR101138485B1 (en) 2006-09-28 2012-07-02 콸콤 인코포레이티드 Bundling of communication signals for efficiency
KR100793298B1 (en) 2006-10-16 2008-01-10 삼성전자주식회사 Method for selecting reception mode of dual receiver-based mobile terminal
US8509140B2 (en) 2006-11-21 2013-08-13 Honeywell International Inc. System and method for transmitting information using aircraft as transmission relays
US9100086B1 (en) 2006-11-22 2015-08-04 The United States Of America As Represented By The Secretary Of The Navy Aircraft basestation
US8532658B2 (en) * 2006-12-19 2013-09-10 Airvana Network Solutions, Inc. Neighbor list provision in a communication network
US7706787B2 (en) 2007-03-21 2010-04-27 Com Dev International Ltd. Multi-beam communication system and method
US8451752B2 (en) * 2007-05-21 2013-05-28 Arrowspan, Inc. Seamless handoff scheme for multi-radio wireless mesh network
GB2497003B (en) 2008-05-29 2013-08-07 Cambridge Consultants Radar system and method
US8427971B2 (en) 2007-06-19 2013-04-23 Lg Electronics Inc. Enhancement of LTE random access procedure
US8078162B2 (en) 2007-10-10 2011-12-13 Battelle Energy Alliance, Llc Airborne wireless communication systems, airborne communication methods, and communication methods
KR101456004B1 (en) 2008-02-05 2014-11-03 엘지전자 주식회사 A method of determining the size of a data packet advantageous for transmitting and retransmitting the data packet
WO2009105530A2 (en) * 2008-02-19 2009-08-27 The Trustees Of The University Of Pennsylvania System and method for automated segmentation, characterization, and classification of possibly malignant lesions and stratification of malignant tumors
EP2093900A3 (en) * 2008-02-19 2013-02-06 Gilat Satellite Networks, Ltd. Satellite redundancy for critical applications
US8503941B2 (en) * 2008-02-21 2013-08-06 The Boeing Company System and method for optimized unmanned vehicle communication using telemetry
US20090295485A1 (en) 2008-05-27 2009-12-03 Motorola, Inc. Dynamically biasing class ab power amplifiers over a range of output power levels
EP2129173B1 (en) 2008-05-30 2011-07-20 Alcatel Lucent Method and base station for controlling beam forming in a mobile cellular network
US8190147B2 (en) * 2008-06-20 2012-05-29 Honeywell International Inc. Internetworking air-to-air network and wireless network
US8472507B2 (en) 2008-07-09 2013-06-25 Secureall Corporation Low power radio communication system
DE102008035440B4 (en) 2008-07-25 2010-12-09 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for determining the distance and / or orientation of a moving object
US7777674B1 (en) 2008-08-20 2010-08-17 L-3 Communications, Corp. Mobile distributed antenna array for wireless communication
AT495590T (en) 2008-09-04 2011-01-15 Alcatel Lucent Method and wireless communication network for communication processing between a high-speed vehicle and a base station
US7969346B2 (en) 2008-10-07 2011-06-28 Honeywell International Inc. Transponder-based beacon transmitter for see and avoid of unmanned aerial vehicles
US8508409B2 (en) 2008-11-04 2013-08-13 Nec Corporation Control method of wireless communication system, wireless communication system, adjustment method of array weight vector, and wireless communication device
US8183999B1 (en) 2009-01-07 2012-05-22 L-3 Communications, Corp. Emergency locating system and method using spread-spectrum transceiver
US8213957B2 (en) 2009-04-22 2012-07-03 Trueposition, Inc. Network autonomous wireless location system
US8558734B1 (en) 2009-07-22 2013-10-15 Gregory Hubert Piesinger Three dimensional radar antenna method and apparatus
US8614643B2 (en) 2009-08-06 2013-12-24 Truepath Holdings Llc System and methods for antenna optimization for wireless broadband communication
US8116763B1 (en) 2009-09-02 2012-02-14 The United States Of America As Represented By The Secretary Of The Navy Airborne basestation
US20110103293A1 (en) 2009-10-30 2011-05-05 Paragon Communication Solutions, Inc. Internet based partitioning wireless communication system
US8787343B2 (en) 2009-11-17 2014-07-22 Qualcomm Incorporated Efficient method for determining a preferred antenna pattern
US8437339B2 (en) * 2010-04-28 2013-05-07 Hewlett-Packard Development Company, L.P. Techniques to provide integrated voice service management
US9397745B2 (en) * 2010-05-18 2016-07-19 Qualcomm Incorporated Hybrid satellite and mesh network system for aircraft and ship internet service
GB2482340A (en) * 2010-07-30 2012-02-01 Davidson Technology Ltd High altitude tethered platform
US8265552B2 (en) 2010-08-31 2012-09-11 Verizon Patent And Licensing Inc. Beam selection in a multiple beam antenna in a fixed wireless CPE
CN201788592U (en) * 2010-09-07 2011-04-06 四川信通通信技术开发有限责任公司 Real-time positioning monitoring management system of unmanned aerial vehicle
CN101964958A (en) * 2010-09-27 2011-02-02 北京航空航天大学 On-board network system and backbone node message processing method thereof
US8788119B2 (en) 2010-12-09 2014-07-22 The Boeing Company Unmanned vehicle and system
US20120200458A1 (en) 2011-02-09 2012-08-09 Qualcomm Incorporated Ground station antenna array for air to ground communication system
IL211386A (en) 2011-02-23 2016-05-31 Elbit Systems Ltd Large aperture antenna with narrow angle fast beam steering
NO334170B1 (en) 2011-05-16 2013-12-30 Radionor Comm As A method and system for long distance, adaptive mobile, beam forming adhoc communication system with integrated positioning
US9147935B2 (en) * 2011-08-10 2015-09-29 Qualcomm Incorporated Maintenance of mobile device RF beam
EP2756618B1 (en) 2011-09-12 2015-08-26 Intelsat Corporation System and method for canceling co-channel interference on-board a satellite
US9100085B2 (en) 2011-09-21 2015-08-04 Spatial Digital Systems, Inc. High speed multi-mode fiber transmissions via orthogonal wavefronts
US9621254B2 (en) 2012-09-21 2017-04-11 Spatial Digital Systems, Inc. Communications architectures via UAV
US8843059B2 (en) 2011-10-31 2014-09-23 Hughes Network Systems, Llc System and method for gateway RF diversity using a configurable spot beam satellite
AU2012347615B2 (en) 2011-12-08 2016-02-04 Viasat, Inc. Beam switching in a bent pipe satellite for replacing a failing gateway by a virtual utility gateway
US10264478B2 (en) 2011-12-16 2019-04-16 Samsung Electronics Co., Ltd. Methods and apparatus to enhance reliability in millimeter wave wideband communications
US8774146B2 (en) 2011-12-19 2014-07-08 Alcatel Lucent Large-scale antenna method and apparatus of wireless communication with suppression of intercell interference
US9104201B1 (en) 2012-02-13 2015-08-11 C&P Technologies, Inc. Method and apparatus for dynamic swarming of airborne drones for a reconfigurable array
US9350954B2 (en) 2012-03-20 2016-05-24 Crane-Cohasset Holdings, Llc Image monitoring and display from unmanned vehicle
US9755311B2 (en) 2012-05-29 2017-09-05 Samsung Electronics Co., Ltd. Circularly polarized patch antennas, antenna arrays, and devices including such antennas and arrays
CN102707693B (en) * 2012-06-05 2015-03-04 清华大学 Method for building spatio-temporal cooperative control system of multiple unmanned aerial vehicles
US9119179B1 (en) 2012-06-06 2015-08-25 Bae Systems Information And Electronic Systems Integration Inc. Skypoint for mobile hotspots
US8805275B2 (en) 2012-06-11 2014-08-12 Viasat Inc. Robust beam switch scheduling
US8918099B2 (en) * 2012-06-11 2014-12-23 Rockwell Collins, Inc. Air-to-ground wireless deconfliction from ground-to-ground cellular communication
US8565689B1 (en) 2012-06-13 2013-10-22 All Purpose Networks LLC Optimized broadband wireless network performance through base station application server
US9144082B2 (en) * 2012-06-13 2015-09-22 All Purpose Networks LLC Locating and tracking user equipment in the RF beam areas of an LTE wireless system employing agile beam forming techniques
US9160497B2 (en) 2012-07-02 2015-10-13 Intel Corporation Application continuity with reroute and reset in a wireless communication network
US9435520B2 (en) 2012-08-16 2016-09-06 Ascendant Engineering Solutions Gimbal systems providing high-precision imaging capabilities in a compact form-factor
US20140073337A1 (en) 2012-09-11 2014-03-13 Electronics And Telecommunications Research Institute Communication device and communication method using millimeter-wave frequency band
KR102029102B1 (en) 2012-11-19 2019-11-11 삼성전자주식회사 Method and apparatus for selecting beam direction in beamforming system
US9669926B2 (en) * 2012-12-19 2017-06-06 Elwha Llc Unoccupied flying vehicle (UFV) location confirmance
CN103149893B (en) * 2013-01-29 2016-08-03 中国人民解放军装备学院 Motor-driven self-organization situation monitoring system
US20140347223A1 (en) 2013-05-24 2014-11-27 Elwha LLC, a limited liability corporation of the State of Delaware Portable wireless node orientation adjustment
EP2801838A1 (en) 2013-05-08 2014-11-12 Astrium GmbH Evaluating the position of an aerial vehicle
US9763166B2 (en) 2013-05-10 2017-09-12 Elwha Llc Dynamic point to point mobile network including communication path monitoring and analysis aspects system and method
US9525562B2 (en) 2013-05-23 2016-12-20 Cahon Systems, Inc. Modular deterministic communication terminal for remote systems
US9528687B1 (en) * 2013-07-09 2016-12-27 X Development Llc Transmission apparatus for beam expansion
US9998332B2 (en) 2013-11-15 2018-06-12 Massachusetts Institute Of Technology Signal-flow architecture for cooperative control and resource allocation
US9853712B2 (en) 2014-02-17 2017-12-26 Ubiqomm Llc Broadband access system via drone/UAV platforms
US9859972B2 (en) 2014-02-17 2018-01-02 Ubiqomm Llc Broadband access to mobile platforms using drone/UAV background
US9385803B2 (en) 2014-03-28 2016-07-05 UBiQOMM, INC. Provision of broadband access to airborne platforms
EP2928234B1 (en) 2014-03-31 2016-05-25 Alcatel Lucent Methods For Operating A Mobile Station And A Base Station In A Radio Communication System, Mobile Station And Base Station Thereof
US9479964B2 (en) 2014-04-17 2016-10-25 Ubiqomm Llc Methods and apparatus for mitigating fading in a broadband access system using drone/UAV platforms
US9599985B2 (en) 2014-06-13 2017-03-21 Twitter, Inc. Messaging-enabled unmanned aerial vehicle
US9614608B2 (en) 2014-07-14 2017-04-04 Ubiqomm Llc Antenna beam management and gateway design for broadband access using unmanned aerial vehicle (UAV) platforms
US8897770B1 (en) 2014-08-18 2014-11-25 Sunlight Photonics Inc. Apparatus for distributed airborne wireless communications
US20160088498A1 (en) 2014-09-18 2016-03-24 King Fahd University Of Petroleum And Minerals Unmanned aerial vehicle for antenna radiation characterization
US9571180B2 (en) 2014-10-16 2017-02-14 Ubiqomm Llc Unmanned aerial vehicle (UAV) beam forming and pointing toward ground coverage area cells for broadband access
US9712228B2 (en) 2014-11-06 2017-07-18 Ubiqomm Llc Beam forming and pointing in a network of unmanned aerial vehicles (UAVs) for broadband access

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4455651A (en) * 1980-10-20 1984-06-19 Equatorial Communications Company Satellite communications system and apparatus
US20060030311A1 (en) * 1992-03-06 2006-02-09 Aircell, Inc. System for managing call handoffs between an aircraft and multiple cell sites
US6760593B1 (en) * 1997-01-30 2004-07-06 At&T Corp. Cellular communication system with virtual antennas
US20110263199A1 (en) * 2003-12-07 2011-10-27 Gogo Llc Spectrum sharing between an aircraft-based air-to-ground communication system and existing geostationary satellite services
EP2447929B1 (en) * 2010-10-26 2015-06-24 SELEX ES S.p.A. Ground station, network and method for a unified ground-to-air and air-to-ground communication system operating in VHF data link mode 2 technology
US20140139395A1 (en) * 2012-11-16 2014-05-22 Max Solondz Multi-sector antenna structure

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9859972B2 (en) 2014-02-17 2018-01-02 Ubiqomm Llc Broadband access to mobile platforms using drone/UAV background
US9479964B2 (en) 2014-04-17 2016-10-25 Ubiqomm Llc Methods and apparatus for mitigating fading in a broadband access system using drone/UAV platforms
US9614608B2 (en) 2014-07-14 2017-04-04 Ubiqomm Llc Antenna beam management and gateway design for broadband access using unmanned aerial vehicle (UAV) platforms
US10181893B2 (en) 2014-10-16 2019-01-15 Bridgewest Finance Llc Unmanned aerial vehicle (UAV) beam forming and pointing toward ground coverage area cells for broadband access
US9571180B2 (en) * 2014-10-16 2017-02-14 Ubiqomm Llc Unmanned aerial vehicle (UAV) beam forming and pointing toward ground coverage area cells for broadband access
US9866312B2 (en) 2014-11-06 2018-01-09 Ubiqomm Llc Beam forming and pointing in a network of unmanned aerial vehicles (UAVs) for broadband access
US9800320B2 (en) 2014-11-06 2017-10-24 Ubiqomm Llc Beam forming and pointing in a network of unmanned aerial vehicles (UAVs) for broadband access
US9712228B2 (en) 2014-11-06 2017-07-18 Ubiqomm Llc Beam forming and pointing in a network of unmanned aerial vehicles (UAVs) for broadband access
US20160161258A1 (en) * 2014-12-09 2016-06-09 Sikorsky Aircraft Corporation Unmanned aerial vehicle control handover planning
US9752878B2 (en) * 2014-12-09 2017-09-05 Sikorsky Aircraft Corporation Unmanned aerial vehicle control handover planning
US10153829B2 (en) 2015-05-13 2018-12-11 Bridgewest Finance Llc Ground terminal and UAV beam pointing in an unmanned aerial vehicle (UAV) for network access
US9660718B2 (en) 2015-05-13 2017-05-23 Ubiqomm, LLC Ground terminal and UAV beam pointing in an unmanned aerial vehicle (UAV) for network access
US9590720B2 (en) 2015-05-13 2017-03-07 Ubiqomm Llc Ground terminal and gateway beam pointing toward an unmanned aerial vehicle (UAV) for network access
US10103803B2 (en) 2015-05-13 2018-10-16 Bridgewest Finance Llc Ground terminal and gateway beam pointing toward an unmanned aerial vehicle (UAV) for network access
US10638402B2 (en) * 2015-06-04 2020-04-28 Accenture Global Services Limited Wireless network with unmanned vehicle nodes providing network data connectivity
US9439092B1 (en) * 2015-07-27 2016-09-06 Sprint Communications Company L.P. Detection of component fault at cell towers
US10321330B2 (en) 2016-03-07 2019-06-11 At&T Intellectual Property I, L.P. Supplementing network coverage with a fleet of autonomous drones
US9918234B2 (en) 2016-03-07 2018-03-13 At&T Intellectual Property I, L.P. Supplementing network coverage with a fleet of autonomous drones
US9853713B2 (en) 2016-05-06 2017-12-26 Ubiqomm Llc Unmanned aerial vehicle (UAV) beam pointing and data rate optimization for high throughput broadband access
US10321461B2 (en) 2016-05-06 2019-06-11 Bridgewest Finance Llc Unmanned aerial vehicle (UAV) beam pointing and data rate optimization for high throughput broadband access
US9980267B2 (en) 2016-05-06 2018-05-22 Bridgewest Finance Llc Unmanned aerial vehicle (UAV) beam pointing and data rate optimization for high throughput broadband access
US10313686B2 (en) 2016-09-20 2019-06-04 Gopro, Inc. Apparatus and methods for compressing video content using adaptive projection selection
US10757423B2 (en) 2016-09-20 2020-08-25 Gopro, Inc. Apparatus and methods for compressing video content using adaptive projection selection
US20180097560A1 (en) * 2016-10-05 2018-04-05 Ubiqomm, LLC Apparatus and methods to provide communications to aerial platforms
US10405223B1 (en) 2017-02-14 2019-09-03 Sprint Communications Company L.P. System and methods for intelligent reset delay for cell sites in a network
US10644784B2 (en) * 2017-02-17 2020-05-05 Ahmad Jalali Communications system for providing broadband access to aerial platforms
US10425148B2 (en) * 2017-04-02 2019-09-24 Parviz Jalali Wireless communications system for broadband access to aerial platforms
US10698520B2 (en) * 2019-02-27 2020-06-30 Huawei Technologies Co., Ltd. Force touch-based communication enhancement method and terminal

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US10341010B2 (en) 2019-07-02
CN107431526A (en) 2017-12-01
WO2015175055A2 (en) 2015-11-19
US20150236781A1 (en) 2015-08-20
AP201609395A0 (en) 2016-08-31
US9742484B2 (en) 2017-08-22
US9859972B2 (en) 2018-01-02
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US20150236778A1 (en) 2015-08-20
US10187140B2 (en) 2019-01-22

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